Both of mine ride. Their 25 & 23.

We've road in the dirt for years prior to getting their m/c option.

The youngest is the real owner of the '05 America & the '80 GS850G Suzuki (and one of the Yamaha 225 TTR's). I own a '72 H2 Kaw, a '71 H1, and a recently obtained '82 Honda CB900Custom (along with the other Yamaha 225 TTR & a Yamaha 350 Warrior).
The youngest was with me through four states & over 2k miles during this years GA. Rally a couple weeks ago.
Funny thing is, NEITHER ONE of them has any real interest in bikes or cars!!!
They'll ride the rallies & bikefests, but as far as regular, routine riding, they just don't care for it that much.
(I'm kinda ok with that)

The best part of riding with them is being able to critique they're riding skills.
(SOMETIMES, they get to see first hand that NO ONE rides flawlessly )
The worst part is seeing something that could be dangerous, and NOT BEING ABLE TO DO ****** at the moment except watch!!!
(Yes, THAT is the nerve racking part of it )

Due to the inherent dangers of riding in traffic, I don't think ANYONE should be able to ride in congested traffic until they have a MINIMUM of 20+ years (or 200k miles) of driving under their belts, and BOTH parents have passed on to a better place.
(Yea, GOOD LUCK with THAT ONE, ay!)


And you may see me tonight With an illegal smile J. Prine