Well personally I love the Ultramarines and I can't understand why so many hate them. I think that it is a great colour scheme, and I also think that just because it is an unoriginal paint scheme doesn't mean that you can't make it look great through your skill as a painter. After all, Thousand Sons are blue and gold and people like them!
is it because they get all the updates and new models? or because they're the GW base army that kids play?
Just like to point out that I am not a kid, and I play them. I also want to know why people hate GW so much. They are the reason this forum exists! (fixed up some spelling in your post