Any moving part is going to wear out eventually, probably not last more than a decade if it's always in use. And everything else is subject to wear from temperature changes. The human body isn't that bad at maintaining itself in comparison. Just need to be able to grow new organs for the long term.
IMO, a computer could be me but I would never be a computer.
Hook my brain up to it (/into a toaster-sized cyborg body) for a different/better life experience, but I wouldn't really be doing it for longevity. A fixed up body would be nice, but I'm not really attached to the idea when I could just exist in inhospitable environments (or a digital life without a physical body to worry about).
I think we could eventually "Ship of Theseus" our brains to hardware and eventually software (thinking protein-based "walkers" along neurons that copy nodes and IO strengths to build a graphene/nanotube-based memristor network with interfaces for current connections to existing neurons as well as interfaces for eventual software conversion), which would thus maintain continuity of consciousness and I'd feel better about it actually being me instead of "just a copy".
Really I just want to get to the point where I can remotely control either a physical or digital avatar at will, without having to worry about my existence ending. Bonus feature: I might be able to extend myself to control two or more avatars simultaneously, or be able to communicate with similar minds in a much faster manner, creating a much faster, more comprehensive form of intelligence.
... in the post-late-stage-capitalism you won't have a choice, death is not an excuse to stop working, now get back to the mines, data fields, and "AI simulators"!
put my brain in a cyborg body the size of a toaster
minisub/amphibious design, spaaaaace, or even something like vehicle/building integration (best if my brain can be plugged-in)
I expect people will treat me like a robot, but I hope they treat me like a movie robot (Robot Buddy or Androids Are People, Too tropes)
no copies (at least not without the best of conditions)
just plug a future-equivalent of a Raspberry Pi into me (not too integrated) and let me handle the OS stuff
yeah, I'd probably play STK using brain VR btw
VR headspace with a skeuomorphic space (I don't know if there's a better term for that, basically the inside-head/behind-eyes cartoon thing using the sensors/inputs)
yeah ok I get it, I know it's more likely they'll just put me in a broom closet or in a brain network somewhere
Particularly if I'd still be purposeless, such as if there'd never be a reason to not just use AI
Cost and law (and disliking the idea of corporate) will stop me from getting my brain put into a cryo tank as a tester, though. That and tech being viable in this way is questionable, especially cryo now and tech that might take 100+ years to advance without humanity experiencing climate hardship.
Can't wait for the future debate of whether normies put their brain in an apple, macrohard, or gøøgl€ device and be forced to view ads for the rest of their existence while not actually having control over themselves.