[jerguismi]

There are actually lot of cryptocurrencies with issuance for eternity: dogecoin, grin comes to mind at least. The inflation parameters are the easiest to change, if for Bitcoin those are a problem, some other cryptocurrency with better parameters can take over. The market will decide, as no one forces anyone to use specific cryptocurrency, there is pretty much free competition.

[tromp]

I wouldn't say there are a lot. Among pure PoW coins I only know of Dogecoin, Monero, and Grin. Of those, Dogecoin and Monero have tail rewards at 1% and 1.7% (respectively) of initial rewards, while Grin has an eternal emission of 1 Grin per second. Kind of shocking how it took more than 10 years for the simplest possible emission to be tried...

[millettjon]

Exactly! We can all learn from multiple parallel experiments in progress and we have choice!