If you read what I wrote and extrapolated statist intent, then you are wrong. Rather than being an asshole about it, though, I will educate you instead.
There is a 100% probability that life will end in death.
There are risks associated with "livin' life," things like going to work, visiting friends and family, and maybe even taking a vacation to see new and interesting things. There is risk associated with these behaviors, but it is widely (well, universally) considered acceptable risk due to the benefits (living a full and prosperous life, or "getting out of Mom's basement" as you put it).
There are risks associated with other behaviors, things like riding in helicopters or getting into gunfights because bad people need to be made to stop doing bad things. Elevated risks, but also elevated benefit. Perhaps even working with especially dangerous materials, but with engineering controls and PPE that balance the risk and benefits.
Then there are risks associated with recreational behaviors like skydiving, hunting, or even drug use. Sometimes these risks are acceptable to individuals and sometimes not. For instance, how many people don't hunt public land due to increased risk of catching an errant round? Lots. I also know of a few people that died skydiving and left behind wives and children. And for what? Selfishly chasing an adrenaline rush; probably unacceptably small benefit relative to the risks. Who here would consider using heroin to be acceptably risky?
When an individual is performing an elevated risk activity and he is the only one potentially affected, that's fine. When you leave behind a lot of pain and suffering for a risky recreational activity (or just generally poor judgement), you're probably just an idiot or an asshole. When you get someone else killed for your risky recreational activity, well that might just be evil.
Don't ask me to feel sorry for someone that does something like this, and don't try to claim the moral high ground here, because it isn't yours.
A man got himself dead, and killed his son in the process, engaging in dangerous activity for a recreational purpose. The fact that he likely did not understand the level of risk is immaterial. I feel really sorry for his friends and his family because I've been there myself. It hurts, and it is hard to rationalize a death "for no good reason." It truly is tragic, and nothing I have said indicates I feel otherwise.
And nothing I have EVER said indicates that I believe that prior restraint in the form of government intrusion should be leveraged to try and stop people from doing risky or stupid things to themselves and others. People should be held to account after the fact.
I hope the family of the deceased find strength in each other and are able to move on with their lives.
And I hope this has helped you understand what I wrote earlier, why it was morally justifiable, and why it was anything but "stupid."