This is contrary to my experience and imo stultifyingly terrible advice. I was taken to concerts from the time i was in elementary school. my best friend takes his 2 kids to concerts all the time. back in the day (meaning 6 months ago) i saw a reasonable number of 20-30s attendees at most concerts in the city. but don't take my word for it: instead listen to what the greatest orchestra conductor of our lifetimes, LB, thought about this. AT's reverse ageism aka a form of elitism is pathetic.