For me personally, I don't think I will ever forget anime. Like many other posters here, some anime has had an enormous impact on my life and I'm really grateful for that, especially the amazing OSTS they have. Some of my personal favourites include my all-time beloved Evangelion (which has helped me so many times), HxH, Natsume Yuujinchou. Game favourites include Danganronpa and Fate Extra. To me, my favs represent an everlasting optimism and hope for the future :)
Anyway, I'm going on 20 very soon and these are my personal reasons for drifting away:
1) Anime, like other genres, lose their fun after repeated exposure. Repeating what others said, same plotlines etc. Watching Soul Eater when I was 12 was just amazing, now it's just nostalgic. One good thing to do is be more SELECTIVE
of what you watch: I watch about 5 anime/year, recently I watched Beastars, Death Note and Beautiful Bones: Sakurako's Investigation and it was really, really enjoyable to me. It felt extremely refreshing and just kept me excited to watch the next episode.
2) IMO my biggest reason: The anime / gaming community is pretty bad. Sure, bad apples exist in every fandom but this aspect is one that continuously encourages deviant behaviours: l*licons, pedos, weird porn addictions, and the community is geared towards a younger audience so it's a double edged sword: on one hand, I truly enjoy how idealistic and positive some anime fans can be (it makes me smile when I see younger kiddos dedicate their time drawing anime), on the other hand it's those negative fans that plague the community.
OH, and the MISOGYNY. There are SO many misogynists in the anime community, it's sickening. As someone who strives to actively improve myself in my early 20's and set that healthy foundation, this community ain't it.
4) Dating Prospects(? or an extension of point 2 of how repulsive the community is) - Most guys into anime have warped perspectives on the world. (Strangely enough, I have over 15 female friends who like anime and they're mostly wholesome) I do have guy friends who like anime and are decent but they are few and far between. Most buy into the hyper-sexualised culture, aren't in shape, and are far away from reality as possible. I actually met a cute guy who liked anime in college, who unsurprisingly browsed 4*han, was an edgy alt-right supporterPost too long. Click here to view the full text.