Yet somehow we can't get enough of it!
I mean, I know I'm a sucker for isekai. Some of it is poorly animated with terrible stereotypes (for anime) and far too much fan service but it's not isekai that's cliche it's the story that's being told inside of it that could be.
I'd argue that isekai is one of the best and truest forms of sci-fi: Instead of just "drama, in space!" or "drama, in the future!" isekais are (normally) answering the question, "what if?"
Like, what if you were reincarnated in another world but you weren't human? What if you were a monster? Or a machine? Or immortal? Overpowered because of nature or overpowered because of nurture (i.e. the ability to carry forward knowledge from this world)? The possibilities are endless!
There's so many great isekai anime that explore these and other questions. Some get quite detailed and realistic (in terms of emotions or the sorts of problems one might run into) while others are more about comedy or relationships (again, "drama, in <another world>!").
Some of the more interesting aspects/concepts of isekai anime that I've watched:
- Main character is not the only one that was brought to another world *but the others who also came are from completely different alternate universes* (Shield Hero).
- An *entire group of people* get sent to another world (Arifureta, So I'm A Spider, So What?, Grimgar)
- The other world is *super early* feudal-ish (so primitive they don't know how to make paper or even crochet... yet) and the main character remembers all the arts & crafts stuff her mother and grandmother taught her (Ascendance of a Bookworm). Hehe: How well do *you* understand the process of making paper (think you could figure it out in that situation? =)
- What if your mom came to the other world with you? (this one is actually so over the top and ridiculous but the question itself is kind of interesting: Do You Love Your Mom and Her Two-Hit Multi-Target Attacks?)
Some of those aren't the point of the anime but they're interesting questions/situations nonetheless.