Lottapianos
Scientific evidence would disagree with your opinion that catcalling is designed to make 'women feel small and scared'.
Men act a certain way around each other, it's a group dynamic that changes. In the same way women make different decisions when in groups of other women.
Ask yourself what type of guy has catcalled you? What was the situation? and why did he do it?
In my experience, when I go out and party with my friends we get very sexually aggressive in a way we wouldn't in any other scenario.
The few times I have been cat called it has been in typical scenarios, walking next to a buidling site 2 guys called silly things off a roof, I soon entered the building, chatted with the foreman and both guys were disciplined and sent home. The other time was on the street at early hours in the morning, I and one other was walking down a busy street where a guy told us to 'get our tits out', we told him to f* off and as I turned around I saw a women 5 yards from me actually pull her top up FFS.
So lets put it in perspective, it isn't a good thing, when you see it react how you want, I always confront or humiliate, but your welcome to ignore if you like, but they are words, from a certain type of guy (usually not very smart, or succesfull) in a certain scenario, and not rape, shouldn't cause PTSD or require fear of the bogey man.