I'm an Arsenal supporter for my sins. Been so since a small child in the early seventies.
However, I used to live in South-West London back then, a few miles from Wimbledon. My mother wouldn't let me go to Arsenal in the late seventies, as she was worried about the hooliganism problem back then. However, she allowed me to go and see Wimbledon FC when they were in the third and fourth divisions (they yo-yoed between the two back then). So I went to see them for a couple of seasons until my mother eventually relented and allowed me to make the trip up to North London to see Arsenal.
I still follow Wimbledon, now AFC Wimbledon, as a second team and look out for their results. Loved the Crazy Gang back in the '80s. Winning the FA Cup was great. The fans reclaiming their club from Franchise FC is a lesson for all fans.
Last season was a bit worrying for them. Hopefully the corner will be turned next season.