I would never allow my kids to ride a motorcycle on public roads in this day & age.
If they haven't been riding on a motorcycle from a very early age like 5 or 6 their entire life then they stand no chance of learning the skills that will keep them from being a statistic on public roads. Drivers now have way too many distractions with smart phones, in dash navigation etc hell I saw a woman typing on her laptop while driving one morning last week on my way to work. I mean the cold, hard truth is that every single morning every radio station in this country tells us of at least one motorcycle fatality on the morning commute if not multiple accidents involving motorcycles. EVERY SINGLE DAY.
It's not a matter of if, but merely when at this point and as a professional motorcycle instructor I cannot think of anybody I know that started riding motorcycles late in their teens that has the skillset to manage todays driving hazards.
As harsh as the above is, the unfortunate part is that it is oh so valid.
Personally, I have never diverted from what was drilled into me when I first started riding in 1973.
The vast majority of motorcycle accidents are in an urban area, involve a car, and at that time, left hand turn involvement was also heavily represented.
Today I'd describe the left hand turn element as likely in second place to distracted/underslept/frustrated/aggressive drivers of anything with wheel counts of 4 and above.
To this day, I don't ride around town, and instead get out of town to do non urban riding.
When I am in an urban setting, I still use the same approach I've had since Day 1: If they can see you, they are out to get you. If they can't see you, they are going to get you. Sort of Defensive Driving ++.
One thing is for sure, a track is by far a safer place to ride!
Past that, I wouldn't dissuade someone wanting to start road riding, but I sure would caution them.