Watched the first episode when it first aired in america. Have been hooked since then. It led me into catching up in Japanese when i got tired of waiting weekly for new episodes and found them all on youtube. After awhile of watching them in japanese, i still wanted more content, so i started reading right after the pain arc.
Basically the same thing happened for me with One Piece, but i waited about 5 years to go back and rewatched every episode, and watched every episode from 1 to the last episode before the time skip, so about 500 in under a month