How should one deal with life threatening infections or air planes?

I'm assuming you still exercise and go outside and so on, and maybe arrange video calls with friendly people? Because the negative physiological effects from low amounts of exercise or social interactions can easily be a lot worse than the risks from Covid.

It sounds like you've built up a habit of mentally punishing yourself for taking "irrational" risks, and as a result, spend a lot of time worrying over risks in general, including very small but salient ones. I did the same thing when I learned about EA (I don't want to live forever, but I suddenly started to care a lot more about not dying because I do want to accomplish things in life and be rational in the pursuit of that).

I don't have great advice for how to deal with it; I just try to keep an eye on my habits and consciously get myself to change them if it ever feels like it's wandering too far into OCD territory. If you suspect that some of the motivation is also fear instead of just "rational" arguments, you can prepare for the eventuality of getting the virus to make that more palatable. (E.g., prepare food to eat while sick; check-list for what to do, when to call the doctor, etc.)

If you do end up dying, that doesn't mean you played the game poorly. Even death is an acceptable outcome as long as you did your best to reach your goals.

I'd try to "avoid daily dilemmas" by thinking once about the precautions you want to take, and then adhere to them without constantly wondering if you can do even more. And you can reassess the situation at regular intervals.

Regarding the general rationality of this sort of thing: If slightly increasing the chance of living a million years is indeed super important to you, it can make sense to take more precautions than the typical person. (Of course, maybe the mental energy would be better spent on other ways to avoid risks or get benefits.) However, I would make sure that you're doing this because it is truly what you want, not something you think is implied by rational arguments. There are many options to choose from when it comes to purposeful life goals.

I’m really sorry you’re living like this. You’re not the only one, and I think Covid will do long-term harm to people’s mental health and physical fitness for the few people who take extreme precautions.

I second the point that you need to consider the costs of your extreme behavior. Including the costs to your parents and to your long-term relationships with them and other family. “It’s risky” is not a reason not to do something. “The costs exceed the benefits” is a reason not to do something.

Of course everyone thinks they are excessively cautious drivers : https://www.smithlawco.com/blog/2017/december/do-most-drivers-really-think-they-are-above-aver/

As to how I am dealing with risks - by making decisions based on the best available information. The risk of getting covid isn’t the same for all the population. Super spreader events are responsible for a large proportion of cases, and I am avoiding any possible super-spreader scenario. I don’t know anyone who has had covid in the past 5 months, so the risk of anyone I know having covid at the time I interact with them is extremely low. Add to that the interactions I have are few and far between, outside and respecting social distancing, and the personal risk of me contracting covid is vanishingly small. I personally would rather continue to take that small risk as the benefits of social interaction overweigh the costs.

-

Do you wear a helmet when in a car?  I do.