what has been your favourite anime of 2018 and why? (it can be an anime out before 2018 but you have watched it this year)
OH BOY AM I GLAD YOU ASKED!
This show right here, Zombieland Saga. In a year that gave us such gems as Hataraku Saibou, SAO Alternative (this only went up this year? wow!), and from what I'm hearing, Asobi Asobase, the season we closed the year out with has this monster of an anime in it. I'd like to preface the rest of this answer/review by saying I've never liked the idol genre. It's something I've frowned and scoffed at for several years for no discernable reason AND YET HERE WE ARE!
Zombieland Saga is everything I'd want out of any other type of anime. Writing's good enough? Check! Cast that doesn't feel like cardboard? Got it! Funny as hell? Got that in spades! Plentiful yuri ships for me to oogle over? Yup! I didn't know going into this that it was an idol anime, despite being explicitly told so at least once and there being very obvious indicators stating so, but by the time I realized what I was getting into, I was hooked. The first episode was a nonstop rollercoaster ride, and everything after that has been the highlight of each passing Thursday for me. I have to eat several years' worth of words here though, because Zombieland Saga isn't just my favorite anime this year. It's my favorite anime, period. The only other times anything had even come close to taking the throne from my old favorite - Railgun - were when KonoSuba was brought to my attention and when I was secret santa'd Euphonium. But instead of the drop-dead hilarious isekai or the yuri-packed drama, the show that finally did it was an idol show.
Are the rest of them like this? If so, I've been missing out.
I don't like EVERYTHING about Zombieland Saga, but everything I didn't like is minor enough for the most part for it not to matter. But despite some tiny gripes and being the very genre I've exclusively disliked all this time, I'll happily declare Zombieland Saga my favorite anime, both for 2018 and for all time so far.