Why Does Everyone Hate Aurelion Sol?

So I've been playing aurelion every chance i get since his release, and since his release people have been bagging on him non-stop. Whenever I see people talk about him its almost never good and I believe that he is a good champ and has a lot to offer to any team. now I know he has his problems but every champ does. I really like aurelion he may start out slow and weak but he can be such a heavy hitter late game and can help with ganks with his E and his Q can stun a large group to help in team fights. So if you have reasons as to why he is bad or why he is good then please leave a comment here I want to know why everyone thinks he sucks and if you like aurelion then please help me deffend the majestic star forger.