How old is too old for aggressive cycling?
I'm 65, and doing 60-70 miles a week on local roads, trails and hillsides. I'm not a kamikaze biker anymore, but it's still wholly worthwhile. Injuries just take longer to heal, and I'm not so patient anymore.
You're only in your 30s and you're wondering if you're too old? Find a safer sport, buddy.
Ironically, I'm wondering when I'll be too old. Not even close, yet.