Here's a curve for the thread. Acts or songs you would have never admitted to liking back then but later became favs. Guilty pleasures:
Tons. A lot of hair metal bands. Skid Row and Motley Crue. Not Slaughter, LA Guns or Keel.
A lot of Top 40 stuff. Springsteen.
I agree it's easier as you get older to be open to more stuff because there's not the pressure from your friends to like or not like whatever act. And I was one of the horse's asses who dogged on people for liking lame shit.