Totally agree. I swap phones a lot and it's a nightmare with eSIM. For example I sometimes use an old phone when I go hiking or to a big festival. Better to have that stolen or broken. Some providers even charge money every time you swap.

Also, if I would drop my phone and break it I can simply remove the SIM and stick it in a backup phone. Can't do that with an esim either without the carrier cooperating.

Luckily all my current used phones still have two sim slots. It's something I select for but I'm sure eventually it will become harder.

Sure for a one month travel SIM it's super handy but I don't want it for my main number.