The reaction was negative because huge collars look ridiculous aha.
No suits will never be "uncool". Given the fit is good and you wear them with confidence, they will look timelessly brilliant. Of course the majority of the population doesn't apreciate that, but that's their loss not yours.
That said, wearing a suit on a night out seems a bit try hard. I get funny looks here sometimes just for wearing blazers and ties and the like.
I don't actually own a suit of yet (I'm 18), but I will probably have to invest in the next 6 months for when I have to start taking employment more seriously.