Then what will happen to your account?

[acroman08]

-snip

nothing will happen, your account will stay here as long as bitcointalk is operational unless they start deleting inactive accounts. if you decided to give it to your children/family member, the account will most likely be negatively tagged if other members find out and will most likely be considered as either hacked or bought account.

[tvplus006]

The forum discourage account selling so it is similar to the case you ask...

Heirs can use the login and password for the sole purpose of reporting the circumstances of death from the deceased's account, if they believe that this deserves the attention of the Bitcointalk community or if it was the will of the deceased to report his death. Using such an account in all other cases would be unethical.