I think you are very right in this idea. This needs to actually be acted upon. It may not affect us in the worst ways, but we're screwing it up for our future as a species.  

So you call for inaction? We have techology being developed to pull CO2 from the Air and Water, i believe technology is our best bet at overcoming our usage of fossil fuels and also at fixing the atmosphere

I think we'll see massive changes within our lifetime. It will definitely change the way we live our lives. I'm not a doomsday believer but global warming is certainly real and it's had some profound affects our world in the last 10 years. I can only imagine what it will be like in 50. I live in Vancouver Canada so it's not that bad, but this summer we had what had to be the biggest electrical storm we've ever had that I can remember which is very very unusual for us. I'd had to live in the mid west in the states or east coast. They seem to deal with 2, 3, 4 storms every year.

I'm not calling for inaction but lets face it things have to get a lot worse before we take drastic mesures to change anything. 

See I think this gets a lot of people. They don't want to be labled as doomsayers, but reality is is that it is getting worse and evidence points to it accelerating.. so its very feasible that we could be facing some huge issues in the next even 10-20 years, say for example, the American Bread Basket dries out, or New York gets put out for weeks due to another hurricane. I live in PA in the NE US, and I mean this has been the warmest winter i can recall, i know I'm 19, but it just doesn't feel right. In my area though we're far enough from the coast to not worry about flodding, we still get a good bit of rain so no worries of draughts right now. I guess I'm pretty fortunate as well.

Geologically speaking, the earth has been in a warming period since the last Ice Age ended about 40,000 years ago. We are most likely speeding up the process a bit, though.

Aah yes, the "I don't care what happens to the world as long as I have lived comfortable by then"

Look, global warming is easily observable if you open your eyes. I give you a few examples (from my country)

1. All cities thend to plant trees along roads (looks pretty, lowers somewhat noise, etc). Always "local" tree kinds have been used. A few years ago, it was noticed that newly planted trees do no longer survive the summer. Every city is switching to mediterranian tree kinds now that are adopted to higher overall temperatures but make it through winter.

2. Bird life in Switzerland is segmented in low altitude bird kinds and alpine bird kinds. Those kind of birds that live in the alps have COMPLETELY disappeared and were partially replaced by bird kinds living in lower regions. Birds in lower regions are getting "replaced" by mediterranian bird kinds.

3. Amphibian kinds are disappearing rapidly (probably a combination of higher temperatures and heightened UV radiation).

4. Dangerous insects survive the winter, creating malaria and other problems in the (near?) future.

There are hundreds of other, smaller indicators that are likely the result of global warming.

Just go out and ask the right people and I'm sure they will be able to tell you how you can recognize global warming trends in your city...

I agree that it is not entirely man made seeing as earth does go through cylces, but if the past 10 years are to go on, we have accelerated a lot and for some reason we can't find the brake.. I mean talking of warming/cooling cylces, that's what every 10,000 years?

all the various indicators we have point to global warming happening and to affecting us (as a species) a lot in the future, but there still is a chance for this warming leading to the next ice age

the warming is expected to negatively influence the termohaline circulation, which we see as the main driving force of the gulf stream - if the gulf stream gets weaker and doesn't reach up as far to the north anymore the whole norther hemnisphere will see a drastic cooling leading to an ice age

as a geologist I'm pretty curious if global warming results in a hot house climate or if it ends this interglacial we are living in

I think that is a flaw that is able to be overcame. think about it, we have the research, the knowledge, the means, we just lack the will power.. what do you think is going to kick humanity over that edge?