I think it's safe to say that in 2019 the myth of having to be a "nice guy" (you don't know how much I hate that term) is more or less shattered at this point. If any man hasn't got THAT memo by now then he's either been living under a rock or he doesn't want to be saved. The whole thing was a scam, a con. What we were taught growing up were naive philosophies at best with no basis in reality.
Even against all the current severe opposition to natural, god made masculinity most men are slapping their foreheads realising they've been fooled this whole time.
As a man you have to stand on your square and not get shifted because women will constantly shyt test you and try and coerce and shame you into things you know damn well you don't want to do i.e. lending money, giving them lifts, dating single mothers or overweight broads etc.
There's a current thread on here right now with some dude complaining he told his woman some secret that she blurted out. Whether you believe the bible is literal or figurative, I always remember that story where Samson simped and blabbed off to Delilah on some pillow talk bullshyt and ended up getting his hair cut and losing his strength. You see that with dudes all the time, running their mouth to women, trusting them with shyt they have no business knowing and showing all their cards. Now I treat women like mushrooms - feed them shyt and keep them in the dark. You don't need to know why I'm not with my ex, or how many women I'm dating or what I'm looking for in a woman. None of your business. I date, keep my options open and that's all you need to know. Women ask too many damn questions.
This applies to all areas of life because when you show you're easily coerced you'll just get ate up in this world.