I love all things motorcycles, and would love to recommend them to anyone with with some caveats. If you are a reckless (usually young, inexperienced, and dumb), stay the hell away. We motorcyclists have a hard enough time with what we love thanks to all the 'stuntahz' on public roads. If you don't think you can control yourself on a bike, then please move on. Understand that if you choose to ride, you WILL crash. Period.
The gentleman who lost his head in the accident almost certainly knew what can happen on a motorcycle. All responsible riders do, and it's a risk we are willing to take. Some us ride in different areas, different ways, and on different roads to mitigate risk, but mitigating risk is the best we can do. I personally like to do most of my riding on my sportbike setup for the track. With traffic getting more congested, and people unable to put a fucking phone down, riding in the city has become something I do less of anymore.
I'm sorry you saw what you did, but know that despite the rider's horrible death, the risk was likely something they accepted and understood when they hopped on the bike and turned the key.