If you instead change no behavior, it is likely that when you get COVID-19 you will transmit it to more individuals before you realize you’re sick and need to stay home.
Depending on the rate of transmission, your individual actions can actually result in hundreds or thousands of people not getting sick (or getting sick later).
Make your own decisions here, but don’t hide behind “it isn’t going to change things”
That's quite a selfish way of thinking about this. This is equivalent to an argument I've heard about global warming which is "if China/India aren't going to curtail their C02 emissions, why should the US?"
If everyone thought like you did, we'd all get infected.
Isn't the global warming personal equivalent "if the wealthy all keep taking lavish intercontinental vacations every other month, why do I need to switch from my car to the bus to get to work, even if it takes twice the time"? I find that a good question, and the usual answer "they're doing that to promote awareness" doesn't satisfy me, really.
https://abcnews.go.com/US/jetblue-plane-passenger-diagnosed-...
All scenarios that support your line of thinking halt all human physical contact and presence in shared spaces. Does that sound feasible to you?