Ahmm, I disagree. N/D on old human mages is quite helpful as it helps deal with old age, either by increasing maxage so that the mage is considered younger or by decreasing the chance of getting old age afflictions.
Edit: yoohoo my 2.5K post. Damn, I should have posted something smart or witty, maybe quoted a poet
Edit2: Sorry, couldn't resist the urge. Here's the quote, and it's not that much off topic - after all it does deal with life and death and concludes that maxage ain't that useful anyway
"
Life's a piece of ****,
When you look at it.
Life's a laugh and death's a joke, it's true.
You'll see it's all a show,
Keep 'em laughing as you go.
Just remember that the last laugh is on you.
"