It's Iwata's personal endeavor to make all Nintendo Fans bow to him since he has full control over what happens at the screwed up world that is Nintendo's Kyoto office. It's a power trip sort of ordeal.

Because they hate money, they do whatever it takes to screw fans and take longer to release games , even if that means giving high quality games with little to no bugs...

Nintendo doesnt have efficient second and third party to hide their first party development cycles. They also don't work by two year standards like most western companies do to meet due dates. They usually like to make games properly. Of course, they are thinking about the bottom line, but unlike most western companies they think about getting quality out to you so you get your paid for. The problem with them today is their lack of second and third party.

Quality and engine development.

Nintendo games don't tipicaly take 3-5 years to develop and your examples of third party games don't represent any game quality at all.

That's only for big games, and I can't find the similarities you talk in games like Zelda TWW, TP and SS

They haven't made a  bloody Metroid game where Samus' boobs are very big! That's Nintendo's biggest issue!

dont really agree with the OP but ill play devil's advocate to people who are saying that Ninty games are of higher quality. Not disagreeing BUT considering the games Ninty make are less technically demanding than say teh Skyrims or ACs of the world, thats not a big accomplishment.

I think it is more about not milking the franchise to death as most their games have a simplistic concept to them. It is also part of the reason why most their games don't age, because there is far and few in between.

Like why do we need to have a yearly (well 6 monthly according to OP) releases of Mario Kart? What could you possible add each year to warrant people buying the game every year?

Not to mention people who supposedly claim will buy a Nintendo system when games come out keep saying way too much mario. Now OP wants to add more mario lol?

They need their time to make quality titles like Game and Wario, Wii Party U, Other M, and have to polish extra long so they can't just pump out game after game. Please understand.