I lived on the east coast for my entire life. Climbing was limited to indoor walls with large handholds. I thought I was good. This year I trained to climb by doing 20+ pull ups per set and up to 400 in a day. I thought I was strong, then my friend Joe took me out climbing. I couldn't climb anything while Joe was flying around like a pro.
I was confused, my arms were strong, my forearms were really strong, my wrists were solid. However my fingers were weak. Real climbers use fingers....who knew. I was instructed to do finger tip pull ups for training. It helped but I still need to do more work.
I will try climbing again but I will never assume I'm good. I've been humbled.