Now to just go through your points in order:
1: Polyamorous relationships have a significantly higher rate of sexual and emotional abuse not to mention physical abuse, they are the worst type of relationship to have when raising children too as it leads to an unstable family situation which stunts emotional devolpment.
2: "Manly Men" are the people you will call for help when you've been mugged or assaulted or worse, that you will call for help when your house is on fire, the people you will call for help when there's a natural disaster and are the people you depend on to ensure your country isn't invaded.
3: Women who are promiscous in youth almost always suffer later in life, it's been proven that the less one-night-stands a man or woman has had before marriage or a long-term relationship the better, Sex is more enjoyable, intimacy as a whole is easier to discuss in a healthy manner and it leads to a better understanding of each other which promotes a healthy relationship and emotional stability.
I don't know if you're just mad or are just an idiot, but if you can get your head out of your ass you would understand that you're wrong to just insult whole groups of the world because you don't like reality.
And if your will to live is really that low then get the fuck off the internet, you evolutionary roundabout.