I don’t. When I look at all that goes into making what I think of as “me”, I don’t see a single thing that would survive my death. The more I look at it, in fact, the more convinced I become that “I” am little more than a psychological construct, a character in a story that this brain is constantly writing.
Just to hint at what I mean, memory is clearly a neurophysiological function, isn’t it? Trauma or disease to the brain can permanently wipe out memory. If this were to happen to you, who would you be then? Clearly, a huge element of your identity is based on your personal narrative, your sense of having had a past. But that resides in the neurons, not in some spirit.
Is who we are expressed by our moral valence? That too has a strong neurophysiological component. Damage to certain areas of the brain can completely alter one’s ability to constrain impulses, a key facet of morality.
Does one lying in a coma, incapable of thought, have a “self”? I think you could argue that it’s at best a potential for self. If this comatose body has some spirit that is capable of thought, then where is it as that body lies there, and why doesn’t it go on thinking and being aware in spite of the body’s incapacity?
Those are some of the questions that lead me to doubt any claims that something that could rightfully be called me will carry on past the demise of this body.