One Punch Man, best anime?

Absolutely not.

A bad shounen and a bad gag manga.
I mean... if you live in the middle of those, you can try and be... medium?

I disagree. Watch Hunter x hunter or one piece both can hold the title of being the best anime ever

Definitely.
The chances of villains are endless, and the counterpart is great.
It has everything an anime should give you, epic phrases, life lessons and a protagonist who is not interested in being a protagonist.

well I watched all of season 2,it seems perfect but the story in season 2 I was disappointed