I wish I could feel this way! I actually have little to fear from the initial covid infection and, if covid were 'just like' the flu, I would go back to my old patterns.
Unfortunately, I know people in higher-risk categories (my parents included) for whom a covid infection would be significantly worse than the flu (though likely not fatal) and the research on 'long covid' is both developing and scary[1]. We aren't sure about the risk factors yet, which means it's hard to estimate how careful to be[2].
Ultimately we will all, individually, need to make decisions about when things seem 'safe enough.' I don't begrudge people making their own decisions, as long as they behave in a way that allows me to continue to make my own decisions.
[1] https://www.npr.org/sections/health-shots/2021/12/16/1064594... [2] https://www.bbc.com/news/health-57833394