At first I didn't want to watch it when my friends explained Saitama(in the context of who would win type situations) thinking it wouldn't be interesting.
Instead of watching it by recommendation I watched it to study him and point out how broken he was in those WWW situations, finally I realized the series was a satire, something nobody had pointed out prior to my initial viewing. Suffice it to say I watched all the episodes back to back.
He still doesn't have any feats to beat superman though.