Many golfers are obese and do not have the athleticism or skill to transition into a proper sport.
Tiger Woods was so dumb he jogged in combat boots and couldn't break 25 minutes for the 5K. Now he takes steroids so that he can muscle a 1.6 oz ball a few hundred yards. You don't see tennis players getting jacked to hit 140 mph serves and that's because they have superior muscle coordination and flexibility.
In another life, most golfers would be used car salesmen, scam artists or z list reality stars on shows like "storage wars".