I haven't seen a anime for years, but definitely my favorite anime of all I've seen has been Re:Zero kara Hajimeru Isekai Seikatsu!
And yours? 
What are your favorite animes?
Well , many great anime has come out in the past few years , like Vinland Saga , Mob psyco , ...
as for my all timer , it's HunterXHunter 2011
- Edited
I don't like anime personally XD
JOJO cause I'm cool like that you know? B)