Nothing wrong with liking big boobs. Many men do, myself included.
However, the size you are seemingly seeking is often detrimental to the health and happiness of the women who have them.
I know this better than most as my girlfriend actually had to have reduction surgery to prevent her from developing life-long back problems that would, eventually, have resulted in the necessity of wearing a back brace all the time (according to her doctor). She already got headaches daily from the strain and it actually hurt her a lot to run, which she hated because she loved running when she was younger.
She is only 5'2" but pre-surgery she was up to a GG cup size and couldn't get a bra that fit (despite spending $200+ per bra) because she is only a 30 around. Now she is down to an E cup (which is as small as the doctor could safely go) and is much happier for it. She can stand straighter, gets less headaches, and in general has much less day to day aches and pains in her back and neck. Also, bra shopping no longer costs an arm and a leg.
As a bonus, I think her boobs look much better now than they did before (not that I ever complained haha) because they have a much better shape when unsupported and don't look totally absurd in relation to the size of her torso.
So, what I'm saying is, it really is a preference thing in the end. But you also have to be aware of what it is like for the woman to have all that extra strain on their body. So, maybe temper your expectations slightly with a little realism as I don't think expecting a real-life anime babe physique is going to get you very far lol. Then again maybe you'll get lucky. Who knows really.
As for your friends saying, "You are wrong to like this," they are simply very wrong themselves, as no one should (within reasonable limits) be ashamed of what they find attractive and there is no conceivable reason I can think of to suppose that your preference, in and of itself, should have anything to do with having female friends.