While it does make for some entertaining fiction, and may provide some benefits to the living, I do not believe that 'uploading' is a desirable experience. In fact, I don't believe that one can experience it at all. Imagine the procedure (for a conscious person): your brain is connected to a computer interface and a copy of your mind is taken. Great. Now there is a digital copy of your mind. So what? You still get to…
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.