There's nothing wrong with being cautious, nor does it mean that the people who are doing so are pansies.  Some people have underlying health conditions that make them more susceptible to coronavirus than other people, and therefore if they were to contract the disease they would stand a far greater chance of becoming yet another statistic and adding to the coronavirus death toll.

The fact that you say "I don't own a mask and never will...and it's quite fun to walk into a shop and watch them panic" really does show you up as a very immature and irresponsible person.  We're all in the middle of a global pandemic here - it's people like you who fail/refuse to take adequate precautions who are more than likely going to be the ones to catch it and spread it to other people, with potentially fatal consequences.  Do you really want to have that on your conscience if you do catch coronavirus at some point and subsequently end up spreading it to other people, some of whom subsequently end up dead as a result?  Personally, by the tone of your post, I get the impression that you really couldn't care less if that did happen, and would be more than likely to burst out laughing if  you found out that this had indeed actually happened as a direct result of your actions...