"If I die, that's my problem." — if it were that easy, I'd be fully on board with you. I am not a fan of being told what I should be doing. In a society (like they say, no man is an island), however, it's not always that clear cut. Once you're infected, the disease does not only affect you and your body. You pass it on to others, you may have an unexpected reaction (which can now be said with quite some certainty, is at the very last the same or worse than whatever the vaccine would do to you) and that reaction means you may use up unexpected resources provided by society. If you live on a farm out in the desert all by yourself, don't need a doctor or hospital, and end up dying or being fine without other people affected, then sure, you do you. That I fully support.
Seeing you post here in HackerNews, I'd guess you'd actually enjoy reading up (and are qualified to understand) on mRNA technology, including the Pfizer "disassembly" for it on GitHub.
In terms of your attitude being mainstream, that'll depend on how many people end up getting the vaccine. That sort of thing tends to change quickly (in both ways).
