For my money I'd like to become a ghost after I die. I'd remain in this world, with my senses unchanged or perhaps even enhanced, but with the characteristics that are traditionally attributed to ghostly entities (in the West at least).
Pros:
-immortality (since I'm already dead

)
-won't need to eat
-won't need to sleep
-won't need to work or pay rent
-not bothered by walls or traffic
-most importantly, unseen by others unless I want it
-i could scare others when I do choose to appear
Cons:
-none (I already have no sex, ever, for you smart-asses out there. besides, ghost-sex might exist... the mechanics would have to be hazy at best!

)
I exist to observe, and being ghostly would remove every obstacle to it, while adding greatly to the potential. I suppose I could eventually go mad with isolation... But I could find other ghosts for company!

Then I'd just drift away (pun intended), once they're no longer needed. Humans tend to take offence to that, being thought unnecessary; but I'm sure other ghosts wouldn't mind, at least not if they too had become ghosts by choice as I did.
@Darkflight: I've never been able to fathom folks like you. How can you possibly want the end of your consciousness, unless in terrible physical and/or mental pain (which, presumably, Heaven could correct, whatever their nature)?
