Ann
No anecdotal evidence here, just a thought. Sounds like your life is super-stressful so just let your guy do his bike thing -- and wait until he asks or even longer to consider two-wheeling. He'll be fine and you won't be creating more stress/fear/ craziness/ uncertainty in the bigger picture.

XXOX (oops! I'm I just supposed to say 'hugs' convention paranoia...
Aline