I actually think you can compare extreme sports to an extent. Both are a high risk lifestyle. The problem for me has never been the lifestyle choice, but the number of people choosing it. Extreme sports put unnecessary drain on the healthcare system, but there are not enough people doing it to be a problem. I don't think obesity would be an issue if there was only 1 or 2% of the population doing it. The problem that hams like to ignore is that it's 80%+ of the population being a drain.