hard to say with out actually coming upon that situation... I mean every loves to say that their spouse has no input into their riding... but I'd be floored if even 50% of them actually followed through with that if met with that situation.
me... if my wife (when I get there) and family really had a huge deal with it... I'd probably hang it up... but as my girlfriend rides as much as I do... I doubt that will ever happen...
Injury... if I got injured severely.. or narrowly escaped a very bad situation... it might change my outlook on things... I love motorcycles because of the freedom I get, and the way they let me experience the land I'm riding through... so anything that's gonna rob me of that... and I'll hang it up.
I'll never be a track only rider... that's just not what interests me about motorcycles.