Winchester, sorry to hear of your lost friends.
I've been an avid motorcyclist for about 10 years, and am well aware of the dangers having lost friends and almost my own life (in a motocross accident). Still, riding has greatly enriched my life and led to many great friendships and memories. Despite the danger, it's hard to imagine not having motorcycles in my life.
Dirt biking is a great way to enjoy the fun of riding w/o the dangers of the street. Yes, you will crash in the dirt, and quite likely get injured at some point(s), but they're usually not too serious.
I spent the weekend out in the TX Hill Country w/ my sportbike group, and had a really fun ride through TX's best roads. On the way back to our cabins, a trio of guys not w/ us got mixed into our group. One of these riders in front of me went wide around a sweeper for no apparent reason, and it looked pretty bad from my perspective. Fortunately, he was fine, only his bike (and possibly his ego) was damaged!