All:
Remember...it is only a game. Sometimes I think we take ourselves too seriously.
The beauty of golf is that it has rules, structure and etiquette, but also that a golfer can pick and choose how they play the game under the rules and convention of play. You can choose a persimmon club or a metal driver; both conform to the rules, and although one may give a golfer more advantage, you still have the choice. You can walk or ride at 90%+ of all courses; the 'all ride' courses really are few and far between, and most of them are out of necessity due to length between holes or terrain. Again though, I have the choice not to play the course if I don't like their policies.
I am not a big fan of carts, but they are here to stay at most courses. The money that courses make off of them, the demand for them by most golfers, casual and serious, dictates that carts will be around for a long, long time. The minority of us who are not big fans of golf carts can yell, scream and stamp our feet all we want, but the carts will still be there most places.
The only time I take a cart is if the group I am playing with dictates that it be so...normally the odd scramble or business golf usually dictates a cart. Maybe I don't like it, but I am not the ONLY PERSON on the course, and I try to squelch the selfishness that I feel by wanting to walk all of the time. Usually, a few beers and 18 in a cart turns out to be enjoyable, maybe not the same enjoyment as walking, but enjoyable nonetheless.
Many sports have these equipment issues. Baseball has wood v. aluminum bats, and even ash v. maple bats. Tennis isn't seriously played with wooden rackets anymore, and everything from hockey sticks to football equipment have evolved over the years (when was the last time the game was played with leather helmets, as my 82 year old ex-NFL playing great uncle still semi-seriously laments?).
Things change, debatable sometimes for the good or bad, but they change. Golf at its core still is player vs. the course, player vs. player, a couple of hours spent competitively and at the same time playing a game and enjoying the company of others or of nature. Sure, there are a few louts, drunks and loudmouths who don't respect the game of golf or others, but no more than in the softball league I used to play in, and probably far fewer in golf than in other sports.
I would love to go back to persimmon clubs (with hopefully a little more forgiveness!), steel spikes, no range finders, and walking all courses with very few carts (at 40, I can't remember a time without carts), but it simply ain't happening. I always have the choice to use persimmon clubs, no range finders and walk, but am not selfish enough to force that on others, or deny them what is usable under common convention and the rules of golf.
Dark Ages? Nah. Different? Sure. Still enjoyable by all....YES!