I was a big brother for 10 years (long ago), he was 9 when I got him, his dad died on a bike when he was 3.
That kid wanted a dad, bad. I would have taken him on but he had a mom already so I could not help him that way.
It doesn't matter how a kid loses a parent, its the same to them. It is up to the parent to calculate risk.
So, all the time my kids were growing up, I stuck to bicycles and we had a riot the whole time. I took them all over on the bike, later with a baby trailer. I had 15k miles on just one of my mountain bikes
But I did commute on it for 5 years also.
When my youngest got to the middle teens I decided to buy another motorbike and I've never looked back.
Almost killed myself last Oct on my LT when I crashed it, just for a data point. It took me until April to be able to physically try riding again and...I haven't looked back, been riding every since (in pain sometimes, but riding!). That was the first time in my life I broke a bone, much less a bunch of them.
I dunno, my thing when the kids were young was to spend the time with them, not off somewhere on a motorbike.
I've put about 260k miles on bikes since I started again in the spring of 2001. I like to ride obviously. And I'm still riding.
it sure is a lot easier to ride at this point knowing I'm worth more dead than alive!!
By the way, I've lost more friends/co-workers due to being overweight than I have in bike crashes, they don't seem to make it past their 40's when their weight causes health problems. just another data point.