Skeptigirl,
Do you have any negative health behaviours?
If so, what stops you assessing the risks and benefits of them properly?
Perhaps you do not recall the answer I have for this question. But I have posted it more than once as well as incorporate it into some of my classes.
Life is full of risk benefit decisions. Getting out of bed, staying in bed, going outside, staying inside, etc. all have risks and benefits. The important thing is to use the best information to make those decisions. You want to use real or actual risk and not perceived risk which is typically out of proportion to real risk. And you want to make a conscious decision in some cases.
Risks that are easy to avoid are no brainers, seat belts, smoke alarms, basic safety, easily modifiable risk interventions. There is just no excuse for anyone dying in a fire because they didn't bother with a smoke alarm or checking its battery.
Risks that are harder to avoid are more individual. I am not going to give up driving in vehicles even though that is one of the riskiest things I do on a regular basis. And when it comes to a good steak or bacon with breakfast, I don't want to give those up for the health benefit. Someone else might find that an easier risk reduction measure. So I keep the guilty pleasure to a minimum, and then, here's the important part, once I have decided to take or forgo a risk, I quit worrying about it. Stress is also hard on the body.
I have a relatively healthy lifestyle. I walk my dogs about 2 miles every day except when my work schedule is overwhelming during fall flu shots. I don't smoke. I drink that proverbial glass or two of red wine in the evening and may switch to grape juice if the studies show the same benefit. I am however, compensating for my wilder days and I wouldn't go back and give those up under any circumstances. Those risks were soooo worth it.
The problem I see you making here is your selective attention to certain risks. Smoking is probably a useless risk people take but of the other risks, diet and exercise in particular, the evidence is clear these can include risks which are not so easy to abate. Contrary to some people's beliefs that diet and exercise are simply matters of willpower, that just isn't what the evidence shows. You can willfully hold your breath. That doesn't mean you can hold it at will for an indefinite length of time. People can control what they eat, and what exercise they get, but it is grossly oversimplified to think willpower is the only mitigating factor involved.
So putting diet and exercise in the same category as using a seatbelt is not accurate. But what about the risks you are not thinking of? I assume you drive or ride in motor vehicles or walk the streets where those vehicles are within striking distance? You've expressed the attitude in your post that you don't consider those risks avoidable. But they are. You can go out less. You can become a hermit and work from home. Does it cross many people's minds that they are making a decision to take a sometimes unnecessary risk by driving? Why is choosing to go to the movies or a park or on a vacation trip seen as a different risk decision from having that high fat high sugar desert? Neither is required. Both are pleasurable for the most part.
Bottom line, it's a risk benefit decision, use the best information, make the decision, always do the easy things, and be happy.