I often walked on as a single. It's fun to go out with friends but sometimes I just don't have time to hang around before and after the golf round.
Out of the 3+ decades of playing this silly game, I had only encountered a few times which I felt out of the place.
One time was a bout 22 years ago got paired up with 3 young men, They had suggested to me to joint the twosome ahead as soon as we had teed off and out of the sight from the club house. I guessed they want to smoke a doobie or something like that so I happily obliged.
Another time we got paired up with two Middle Eastern looking golfers riding golf carts and they told us they don't want to play with someone walking. Now, the other golfer, Bruce was a 2 handicapper, and Bruce told them we will not slow them down, plus the course was pretty packed so no where to go faster. They refused to play with us so we went ahead of them. This was just after the 9-11 incident so Bruce's comment was, he would act nicer if he looked like those two guys......... Anyway, after a few holes these "golfers" kept hitting into us while we were waiting for the group ahead to clear the greens. Bruce finally turned around and yield back " if you hit into us again, I'll tee up your ball and hit right back at you ".......
I would say, 90% + I would meet up with total strangers and had a good time on the golf course.