>>539553812
I don't remember the exact mechanics but I do remember thinking that at some point and giving it a try, and holy shit do your mages go down faster without.
Essentially, being older does increase your chances of catching shit, but actual age is just one of the factors. The longer you have the old aged trait, the worse your chances get every additional year you survive.
I might also recall wrong, but doesn't that trait also make units retroactively age slower? So they spawn younger than the recruiting panel says, possibly even young enough not to be old aged.
Really not sure if any of this is correct, but I do know I did regret the fuck out of it when I didn't take it. Old geezers dropping left and right like seagull shit after a hearty dose of laxative infused popcorn