I used to push to 15-16% in my early winemaking days, having been one of those meadcrafters Medsen speaks about... Now I aim for 10-12% except for special occasions (in which case I step-feed till the yeast taps out). Tastes better, cheaper on honey, ferments cleaner and faster, less chance that I get complaints about how strong it tastes, and I really can't handle that much alcohol anymore, drunkness tolerance has exceeded hangover tolerance, I'm now capable of getting hangover symptoms without getting drunk. This getting old crap really sucks.
I've found I'm more likely to want to drink a dry-ish mead or wine if it's under 12% than I am to want to drink a dry-ish mead that's more than that. It'll depend on your taste, the sweetness, and the balance of tannins and acidity.
Oh, and even with just good wine sanitation procedures, I've had some 6-8% brews still be good years and years after bottling.