I just turned 40 myself. I took my first mountain bike ride with my Scout troop at age 16. I loved it, and was wishing I could afford to buy one (I was on a rented bike). Then I went flying over the handlebars and ended up getting stitches in my face and arm. It took me about 20 years to get up the guts to try again. Now I wish I hadn’t wasted all that time in between.