To the OP -- what is your age?
And are you serious?
Maybe it's common to carry around bowie knives in plain sight on your person in Houston but that does not fly in most other cities, at least not the ones on the east and west coasts and midwest and yes, even the south that I've been to (unless you count Florida as it's own entity separate from the 'real' south)
First, a club/bar/pool hall is a private establishment. Owners don't like getting sued and losing their liquor licenses. Patrons don't like getting stabbed whether it's intentional or accidental. And "Sorry dude, I meant to stab the guy next to you" generally doesn't make people feel better.
It's the obvious standard that you can't bring weapons inside entertainment establishments, not the exception.
So I'm having a really hard time wrapping my brain around your outrage at not being able to bring a weapon into a nightlife establishment. Unless Houston is just an anomaly in this respect.
And generally the rougher the crowd, the tighter the security. You can't even get into the lesbianclubs with prescription medication in your purse...and at gay clubs the security is notoriously lax. As for hetero joints, my coworker told me about a club with security so tight women take off their underwire bras to get through the metal detectors. This is in the same city, btw.
Or else security is completely non existent, but the fact there were bouncers in your story makes me think the owners are aware and care about the safety of patrons.
I'm surprised the bouncers didn't pat you down or ask the obvious question of whether you had weapons on you. The bouncers you mention sound nice merely asking you to leave your knife outside and not even getting in your face about it or kicking you out + they didn't catch the knife in the first place = they aren't competent. From my observation, bouncers generally are very aggro, not very 'people skilled' and have something to prove.
People get stabbed in bars and clubs ALL THE TIME. Fist fights are bad enough but + weapon is worse.
Also, you are hypervigilant about your safety and the perceived threats in your environment. This in itself isn't a judgement call, just an observation. But hypervigilant young men + a macho attitude + a knife in a crowd and + dareisay, something to prove? is BAD NEWS not just for yourself but for everyone around you.
And my critique of the OP is not about safety or reality. It's about your attitude.
As a woman living in an urban environment, especially when I had to walk home alone late at night I carried a boxcutter with me. Many of my female friends carry pepper spray, knives, shanks, u-locks, take self-defense, etc. I know many friends and friends of friends, all female, who have been assaulted, sexually and otherwise in very public places like the street. You don't need to lecture to any woman about the need to be safe in this world and at least you don't have to deal with the everpresent fear of rape. The typical (single) woman in a city is VERY aware of real threats to her safety, but generally even when hypervigilant such as yourself, women do not exude the feelings of entitlement and aggression that men have and that you portrayed in your OP and follow up posts.
This is about your attitude in regards to having a weapon.
And the discussion about how you need to be able to defend yourself and it's okay to have weapons if you know what to do with it in this case is just feeding into more machismo justification.
I've taken a lot of self-defense workshops and have a martial arts background and the idea that most MEN have that they can handle a knife/gun/etc. and they are qualified and safe with them in public is BULLSHIT. As in grounded in a sense of machismo and/or need to prove something as apposed to grounded in reality. People in general GREATLY overestimate their skill with weapons and their self-defense prowess and greatly underestimate their unintentional threat to themselves, bystanders, others.
Part of the reason I dropped my Krav Maga sessions was that I was surrounded by a bunch of uncoordinated men with something to prove who also lacked the respect for others that traditional martial arts would have given them. Basically, they were fucking DANGEROUS (seriously, some of them were straight up SPAZZES) during sparring because they didn't know what the fuck they were doing but they thought they did and part of the reason they were doing Krav Maga was to prove to themselve and others that they were "tough".
Bad, bad combination again for themselves and those around them.
I don't think this thread should degenerate into a discussion about the sad state of the world today and what an unsafe place it is because it justifies, rewards, and encourages the sense of entitlement, aggression, and excessive amount of machismo in the OP, three things that are real 'public safety' issues.