What is your favorite anime of all time? Why?

I’ve been thinking about this for a while now. It’s a very hard post to create as you have see many animes to compare them.<br>But what’s your favorite anime of all time? And why?<br> Mine is Attack on Titan. I think the show has a great story and animation. I also see a lot of people hate it but I don’t see why? <br>I also think it’s overrated but it’s still one of my favorite animes of all time.