This was my favorite subject for a while and I arrived to a similar idea of transformation, except without nanobots: the computer becomes a continuation of your brain and then your biological brain is gradually killed cell-by-cell.
However, the idea that you still get to die after backup is based on an assumptions that I don't find neither obvious nor true: that the stream of consciousness is fully continuous and never stops. I've recently seen a documentary about a guy who was declared brain dead and yet recovered into being himself again. So it might still be possible to "upload" a dead brain in which case your experience is that of a resurrection which doesn't sound so bad.
However, the idea that you still get to die after backup is based on an assumptions that I don't find neither obvious nor true: that the stream of consciousness is fully continuous and never stops. I've recently seen a documentary about a guy who was declared brain dead and yet recovered into being himself again. So it might still be possible to "upload" a dead brain in which case your experience is that of a resurrection which doesn't sound so bad.