I think this is a bit of a tricky proposition
"MK: I use caddies because we’re walking-only. At The Dunes Club in Michigan, we have 25 great caddies, ranging in age from 78 to 13. Bandon Dunes has 225 or 230 caddies. I’m very proud of that. The potential of adding caddies to more courses – and it’s not going in that direction – would do wonders, far more than the junior golf programs that exist, in creating new participants. I think every young caddie becomes a golfer. . . . The golf cart killed caddie programs, and therefore we lose that flow of new golfers into the game."
I'm all for walking, and love the idea of caddies, but as golf expands the caddy dynamic becomes difficult from a cost perspective. I think most of the clubs where the membership has substantial disposable already has a strong caddy program. I know at my club, if members had to take a caddy, at even $50 a loop for their 10 rounds a month, 75% could no longer justify the expense of belonging to the club. I think many would love to support a kid, but at what price regularly. I love playing with a caddy, but at $100 - $120 generally I view it as a treat much more than an every day event. If we want to grow the game in both numbers of players, and numbers of rounds played, the portion of rounds where the player can afford a caddy dwindles.
Of course this side also ignores the hit most clubs would take in lost revenue from carts.