Maybe some folks don't like carrying their clubs or paying a middle-aged looper $25/hr. Perhaps the cart allows them to attend to business which is increasingly done on the phone without impacting the pace of play. Possibly the carts allow them to better care for the course by sanding all their divots and some of those left unrepaired by walkers. And quite likely, these riders understand the importance of cart revenues to the bottom line and are willing to support the club. I wonder if there is a study of trunk slammers and F & B support- relative % riders and walkers.
(NOTE: Before anyone sends a banishment email to Ran, please consider that I walk the vast majority of my rounds EVEN when I don't have to pay for a cart. And I typically carry a small sand bottle which I replenish with bunker sand three or four times during the round. Though not quite as much as with the 1% who bear the tax burden so I can go light on the tab, I really appreciate these good folks making it cheaper for me to enjoy my golf. Oh, and some even let me play with them, my clubs clanking as they try to set up for their shots.)
Relative to JT's question, in the U.S. at least, (90%+ at my easy-to-walk 5.4 mile home course) appear to prefer riding to walking (probably a primary reason for some private clubs imposing mandatory caddie rules). If golf is to be enjoyed as opposed to be endured, would we entrust a relative few to define greatness so narrowly?