Operating within limits is good for creativity. If you could get every talent, it would be boring. There would be no fun at all in figuring out your character build. That's why most RPGs have level caps.
Further, on one path of the game, you can't even hit the level cap playing normally. On the other path, you'll probably have like 30 minutes left of gameplay when you hit the level cap. So really it doesn't matter at all :D