Regarding equipment, new v old
First of all, were I king, we'd still be playing hickory.
The equipment obviously makes a huge difference, as the age/distance comparison shows. And yes, the ball, the shafts and the head designs all contribute. But I think the greatest contribution, especially at the younger ages (teens thru mid thirties) is the 'effective hitting area'. NO MATTER THE CLUB HEAD DESIGN, all sweet spots are the same size - the head of a pin. It is the area just around that sweet spot that I call the 'e.h.a.' It is there that the shot looses some accuracy and power, but only slightly. In the old equipment, that 'eha' was a very small ring, so there was a great premium on precision. Now, that ring has expanded greatly (especially on drivers) so that mishits still result in high quality results. A sobering example came about 11 years ago when I was still teaching. Before my lessons started, I was hitting some drivers with an old persimmon (that I still play with once a year). A young mini-tour player was nearby, had never seen lumber and I had him hit a few. He barely got any airborne and none flew more than 150 yards. After 5 shots, he returned it with trembling hands and a look of absolute terror. Could he adapt to the persimmons characteristics over time? Sure, but it would take not only a modification in his mechanics, but a modification of his aggressiveness and expectations.
Anyone can experience the same sensations, on a smaller scale, by rolling some putts with an old bullseye putter.