trapped at any given moment

Doesn't associating your identity with (anything similar enough to) a set of physical parts rather than (pure magic or) a pattern of parts going through time imply a belief in non-local physics?

I think a suspended (I mean not just frozen, but not just vitrified either, any stasis will do, and I mean my argument to hold up against more physically neutral forms of stasis than those) version of my body that actually will not be revived is as much me as a grapefruit is. If physical parts do not vary in their relationship to each other, how is there supposed to be experience of any kind?

Alternatively, if one is made magically invincible, one could be entombed in concrete for thousands of years - forever, even, after the heat death of the (rest of) the universe if one is sent off into deep space in a casing of concrete. Is that what you say has a non-zero probability? Or are you talking about a multi-galaxy civilization devoted to keeping one individual under torture for as long as physically possible until the heat death of the universe?

I will add that I am strongly in the anti-"immortality" camp, as that word should not be used. I am in the anti-mortality camp, that's how I'd put it.