While reading another thread one of the posters (I won't name names as some people don't appreciate it) brought up a point I've wondered about for quite some time.
A lot (if not all) of who we are is determined biologically. Brain damage, lobotomy, mental illness etc can cause dramatic personality changes so unless we have a "default self" we revert to after death it seems a fairly safe bet that we won't bear much resemblance to how we were physically.
With this in mind, where does the self come into the afterlife? Is what we call a soul actually an amalgamation of all past, future and alternate selves? Imagine every nanosecond of your existence brought into being at the same time including any past or future lives you might have, would that be "you" or would "you" simply cease to exist with only a concept to take your place?
That's the heavily Lovecraft inspired first scenario
Another, possibly easier to imagine and describe scenario is that we exist in a state free from biological influence. That means no emotion, no memory (arguably) no urges etc. Would we still be ourselves and would you want that afterlife over non-existence (assuming there is some difference between the two).
Finally there is the merging with the universe scenario. This crops up in various forms around the world, but essentially we "become one" with God/Universe/Source etc. Again where does that leave the "I"?
I've not covered every possible scenario, just putting a few out there for folks to play around with. Any thoughts, comments or alternative scenarios please post. Just try to stick to the topic of self in relation to the afterlife and avoid proselytizing