He could be out there....somewhere.
He's not really dead. As long as we remember him.

This is an aspect of Abrams Star Trek that I enjoyed. The technology, while there, felt more limited, and not just the usual "what's wrong with the transporters this week?" problem. Rather, the technology had its abilities, as well as boundaries that Starfleet was still exploring and pushing to the limits. It felt like there was room to grow with the technology to me, and I really enjoyed that.
I appreciated that, too. The idea that all this was cutting edge technology that someone like McCoy would have every reason to be wary of.