Here's a soild SF book that deals a fair bit with that question:

http://gregegan.customer.netspace.net.au/PERMUTATION/Permuta...

> if that "person" would be interested enough to even stay alive

If you "ressurect" someone's brain, it should behave like the person behaved when it was alive — and people usually prefer being alive to being dead.

But with a completely different set of sensory input, and under a whole different set of constraints.

Your brain is not you. If you resurrected an entire body, whether virtually or otherwise, with all the the myriad microorganisms, etc that implies, it should behave like the person behaved when it was alive.