User blog comment:TheAnimeFan63/This question has been bothering me for a while./@comment-30304373-20180510015526

Izuku looked up to Bakugo and thought he was awesome as they grew up. I assume that since Izuku was obsessed with heros, he knew that Bakugo was going to make an amazing hero, so he wanted to stick near him for better hero studies (something along those lines).