I'm 26 and acquired my ph2 172 this spring. Half a year later (which incl. a number of spirited drives and a trackday) I can say that I have zero regrets. Save for the slight understeer in stock form, it's just an epic package that's very rewarding to drive.
P.S. Showed the car to my dad (59) some time after I'd bought it. He glanced at it and thought "meh". However, having had a go in it, during which he, to my amazement, proceeded to drive it like he stole it and scared me semi-sh*tless, he went "yes, now I see the point of that car. Not a bad choice indeed...".