Impressing the geek chicks..
I'd have to say the short of it is longer range emergency communications.
It seems to me that for comms in a true emergency (hazard to life or limb), nothing beats a SPOT satellite pager or a cell phone. While I find that I can frequently hit a 2m repeater even when cell service is n/a, I don't see it as a 99.999% reliable comm solution.
Of course, the geek hobby factor is part of the reason I got into amateur radio; that and the improved trail communication. I see the slight improvement in odds of contact in an emergency in the boonies as a benefit, not a reason. I realize you're thinking about 10m because it might have greater range, but as XTatik points out, it's not so great if the solar cycles aren't cooperating. It would be nice to have a multi-mode transceiver and be able to use the longer wavelengths for fun and in urgent and/or emergency situations and I will probably do that one of these days when time allows, but I would get a SPOT if I wanted the most reliable method of comms from the hinterlands.