I'm not too worried about old iPhones since by then it's pretty likely to be jail broken and no issues there. I mean even if I brick it (and somehow can't recover; so, very unlikely) it was going to be e-waste anyways, right? As far as recycling goes, turning your old phone into a server is a big win.
But I'm more interested in being able to use my current bash scripts that run on my Pixel. Backup is really the only important one since I can connect to my computers from anywhere to do anything else