In My Hero Academia, BakuDeku is the most popular ship in the Eastern fan base. It's also the number one My Hero ship on Archive of Our Own.
People ship BakuDeku because:
Their relationship is complex and explores the classic rivals and childhood friends trope.
Their dynamic is about growth and forgiveness.
Deku cares a lot for Bakugo and is patient enough for when Bakugo approaches him.
Bakugo has been seen as capable of knocking his pride down if a situation demands it.
Deku stated that despite all of Bakugou's bad traits and frustrating attitude, he always saw him as someone brilliant and amazing.
Shipping BakuDeku is about exploring how their relationship would differ if it existed under more positive circumstances.
BakuDeku is not canon yet, but it's likely that it will become canon based on recent chapters.
(YALL I CANT- THEY R JUST SO PERFECT TOGETHER DESPITE EVERYTHING KATSUKI PUT ZUZU IN HE STILL APOLOGIZED FOR EVERYTHING AND I THINK THATS ONE THING ENEMIES IRL WOULD NEVER DO) ✊✨✨