If your cremated none of the above. You just poof in a cloud of smoke.
If your buried in a casket who knows how long your remains will be in it before it is destroyed. Who knows what the decomposition rate of a funeral casket is these days. At any rate in a casket I imagine your body might be mummified if it was air tight but then again if wasn't air tight you just would be left with a funeral suit and skeletal bones overtime.
That's why I think you should look fantastic and sauve on your final last day so if somebody digs you up they will say to themselves that skeleton is wearing a really nice suit.
Believing in a afterlife is humans vain attempt at making themselves seperate and different from other animals or other living things making themselves believe that the universe has a special place in reserve for them while giving themselves a false sense of self privilege.
That right there is the basis of all religion.
It's the ultimate form of vanity as it is the ultimate form of self worship.