40 - Keep em comin'! Nothing says "been around, know it, own it, fuck you if you don't get it" quite like a Man who is willing to let the grey show. Hot, hot, hot.
My Man had more silver in his temples when we met 16 years ago and were 35 than he'll admit to, and I've quadrupled that quantity, Lord knows (partly out of unintended but equally unapologetic consternating behavior, and partly out of a secret desire to see more and more silver frame those bright eyes!)
Shaved my goatee of some years when the razor cut in too far recently. Thought I'd let it go, but when somebody told me I looked younger, I grew the whole damn thing back immediately, and now I keep it trimmed to about four days growth (which is long...lychanthropy in the bloodline) and it's a fucking badge. Whiter than ever, with streaks of bright red and blonde.
I keep my skin in good shape, but it has creases at the eyes, and a furrow in the brow that I like. The rest is smooth and tight from shaving (and getting tighter, thank God, sagging is the one option I will reject), but character has value - it's legacy.
Mind you, I'd have spit in the wind at 25 or even 30 if I'd read some crap like this, but now...Like eagermuscle said -- I've earned it. Frankly, one of the reasons I trust my 26 year young trainer is that he has some lines and sufficient weathering, for a younger man, to say "been somewhere", as in other than the spa or the cream aisle at the drug store.
Let it snow, let it snow, let it snow.