If you are going to play golf, you must walk. Riding around in a golf cart is what non-golfers do on a golf course. The problem is, when you walk you have to carry your clubs. (Unless you are in Japan where you get a girl caddy who puts your clubs on a little train rail that runs along the course. Who in the hell thought of that?)
But, back to the subject at hand: A bag of golf clubs can be quite heavy. You need a bag which distributes the weight correctly on your back, not your shoulders. Belding has developed a bag which had an "H-shaped" strap and it puts all the weight in the center of your back.
So, if you're going to play golf, remember: You must walk. You also must bet at least a small amount with your playing partners. You will feel better about all of this if you get a good walking bag.