For me, I'd rather not have biological immortality for simple reasons: The only way society generally progresses is when rich assholes die. As the guillotine is sadly out of fashion, we've had to rely more on natural causes.
Imagine Elon Musk living forever... or that million year old politician you hate... or those boomers constantly voting against anything to help the younger generation because "I got mine, fuck them kids". Then we get the overpopulation to go with it and... eesh.