Yes because when I speak of 20K years, couple in my sentences obviously refer to 2-3 years....

@Hapaestos

There is a racial aspect to this decline too with growing birth rate in 3rd world countries and delcining birth of the industrial countries.

3rd World countries have such high birthrates 'cause people over there don't use (or even know about) contraception. Those countries also have the highest mortality rate in the world amongst infants (if they didn't have such high birth rates they'd be extinct in less than a century). When they'll become more developed they'll breed as scarcely as peopel from developed countries.

Also immigrants from other nations won't keep breeding at the same levels they do now. Catholics in the US used to have more kids at the start of last century and many were predicting that the whole US would soon become Catholic. Guess what? It didn't happen.

Do you really see africa being a developped continent in the next 200 years? they've been colonized for 100 and independent but closely helped for about 50... the only thing that changed is that now instead of tribal systems, they have corrupt governments, add to this a population growing faster than these country can possibly handle and you don't have the reciepy for rapid developpment of the infrastructures and of the cultural morals of the people there... your birth rate is still gonna be high for a long time.

Err the Catholic migration from last century was from developped countries and it basically stopped on it's own. The US is currently more trending to being overun by south/central america and Asia than anything else. Again i'm not saying this in a bad way, just that the migration flux are more consistant due to the discrepancy in the quality of life, and although you may think that migrants addapt and start having the same birth rate as the local country, if the flow of migrant keeps the same, you'll still have a gradual change in the population of the country. Take this to a much larger scale and you get a country that is basically colonized. (great example, because it is out of proportion, is the US.... white people invaded indian land... the country is a white country now, not an indian one... well all I say is that white people are the indians of the future, they have the attractive land with opportunity, and many many people are gonna migrate there thus in the long run changing the population.

Now a case could be made for the US that the migration will stop from the americas at one point.... but do you really think that any south american country will in our lifetimes have a migratory appeal greater than the one of the US? I doubt it. same as I doubt that Europe will be less appealing than it currently is for africa and the middle east.

again, I realize talking about races can be offensive, this is not my intent, i'm just arguing on the future of the human race as a whole. (I believe this is in topic as my reasoning is that our cultural "cowardice" which is openess is the reason why the cultur europeans/US currently holds as theirs will disapear and why the population of these countries will ultimately be wiped out by being absorbed in an other racial group)

The fact that most immigrants come from underdeveloped countries still doesn't change the fact that they'll eventually adapt and their birthrate withing their new countries will eventually be the same as that of the natives.

And what relevance does the fact that African countries have high birthrates have in this discussion? Whites have never been the majority race in the world (I beleive Asians have always held that distinction). Plus it's not as if all of those people will migrate (and nowadays you need to fullfill certain criteria to be able to imigrate).

Also, as you said, in the future most people will be mixed race. Your vision that they'll be all black/asian hybrids is kinda bleak and paranoid.

A clash of cultures, a civil war non-muslims vs muslims, i dont want it to turn out that way, but look at nigeria

its just the question on which side the leftwinged politics will stand

Haven't you ever heard of globalisation? Eventually there will be only one culture, and it ain't gonna be that of the third world people.

Seriously? That's your point of comparison?

the fact that african birth rate stays high is relevant as the migratory flux will continue.

say each year you have 2M new people, even if they become perfect americans, in 100 years, the population will have had an influx of 200M migrants, unlikely to be white as the current majority of the US population, which means that in the end, when we're all gramps, the US will be a 30% black 30% latino 15% asian 15% white nation. Might take longer than that, but that's the genera idea.

the only reason I say it'll be mostly black/asian is because with the current populations as is, it would already be the case, but add into it the population growth and it'll just increase this trend... though Asia is probably going to loose some weight to middle east/india. It is a bleak vision... but I wouldn't say paranoid as i take it as a fatality, nothing can be done about it. (the only option would be a 180 degree on the cultural and moral path that our countries have taken in the past 200 years... not really a plausible option).

Sure, Sure, nope,

I believe it'll be closer to that of the third world people as  they'll be the majority in the end.