I am 60 years old. Over many years of playing (with a long hiatus for raising kids), I played some very good courses: Bedford Springs, Yale, Cog Hill 4, Glen View, Cascades, Old White, Blackwolf Run River, Broadmoor, Knollwood, Burning Tree, Golden Horseshoe, Congressional, Red Sky Norman, and even PH2 (before the restoration). I liked them all for a variety of reasons, but never really thought about it from the perspective of golf course architecture--that is why I liked them and why I liked some more than others.
Long story short, back to back trips within the last 10 years led me to care in a real way about architecture. First, playing Pine Needles and Mid Pines several times in a row. Second, going to Ireland where we did the classic American tour: Old Head, Waterville, Ballybunion, Doonbeg, and Lahinch. When I immediately realized why I though far less of Old Head even though I had not played the others yet and when I fell in love with Lahinch, I also realized that I was "hooked" on golf course architecture.
And for you?
Ira