I've never been to a rock concert in my life. I've been to plenty of orchestral concerts, the kind where you actually sit down and it's mostly old people attending. My father absolutely despises all music that isn't at least 100 years old, and for some reason I just followed his lead for most of my life. Then about 4 years ago I just happened to watch a Youtube video with a Rhapsody (of Fire) song in the background and I was like "This is awesome! What is this?" Ever since then I've been a fan of metal and hard rock. I always used to assume I hated metal, but I never really listened to it.
The problem is, I feel like I'm too old now to attend a rock or metal concert. The sort of people who attend concerts of the bands I like are mostly teens, and I'm now in my mid 30's. I'd just feel out of place.