See: lifestyle porn.
I think TVC once said that at its worst, it can be a "fictionalized Cribs". My catchphrase is "male Sex And The City".
It's a pretty narrow fantasy, targeted at Maxim readers. Easy sex, expensive cars, home theatre system, weed, designer clothes, not having to work, etc. It's easier to enjoy if you share the exact same fantasy and don't mind indulging in some really naked wish fulfillment.
edit: "Doing *the* weed" would be even better.