That doesn't prevent other people from having other reasons for considering themselves identified with other bodies, as for example people who believe in reincarnation.
Some people justify claims of reincarnation by claiming to remember past lives, not merely to "identify with" them. The belief does have something objective about it: it can be tested. Such claims have generally failed of substantiation.
In short, my reasons are objectively good; theirs are objectively bad. What do you mean by "less natural", if not this?
I said their belief was "less natural" because human nature is more inclined to your kind of belief (thus it is universal) than to their kind of belief (which is much less universal.) However, whether the reasons in question are good or bad, they are subjective in both cases.
You seem to be supportive of cryonics (e.g. in this comment). Are you in favor of cryonics in the case that you are revived as an upload? If so, what makes you think the upload would be you, rather than "this body", which would be dead?
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.