This Fermi question is probably easy for some people: I’m guessing there are some women for whom the answer is zero (am I right?), and some men whose necktie-wearing is dominated by “every day at work, 5 days a week, 50 days a year.” For me it’s much harder. I guess I’d say — three or four times a year, as an adult? More when I was younger and went to more weddings. I’m gonna estimate I’ve put on a tie 150 times in my life.
Followup question: how many ties do you own? I think I probably have about 8, but 5 are in the “will never wear again” category, and one of the 3 “sometimes wear” is the American flag tie I only wear on July 4.
Answer in comments!