Well, for starters. You don't want to love any of these women. You don't want to commit to them. You don't want to let them completely assimilate to your life and be the most intimate person to you.
I will tackle this in two ways, the first will be whataboutism because it is important to realise the flip side.
1. Whataboutism
First what about them gaining from each other? I am confused why you assume they would not be each other's long term wife and best friend. Secondly, even if they are not, the other lets both of us not need to be there 24/7 for the other because that other partner is bonding and handling them while we do something else.
Also there are so many like me that solely go for one because they conform, forever having that urge for more and lying to their partner. I am certain I want this and the urge will not disappear.
2. Committing
So, you are making this specific to me but ignore any nuance. Firstly, I never deceive a partner about it and I am unsure what you would want me to say or do to commit more than I do. I always make sure they are okay with it first and often wait a whole month minimum to ever seek more but I am actually new to fully embracing it. It took years to even be sure I wanted it and that it was so much more than just a threesome fetish.
I totally commit. I chat about everything with my partner, we become each other's best friend and as I am the leader of the dynamic (I am typically the more dominant partner both in and out of sex, it is just how I am) I even make sure she tells me what is upsetting her when I spot clues she is upset about something or hiding things she assumes I do not want to be burdened with.
That said, I am not some angel. I am not in this on a selfless mission, I have needs and I do not mean sex itself. I mean, if she is a bad listener, does not really care for me but just a male partner that happens to be me etc, I am not afraid to breakup and sometimes all is fine but we have no chemistry and passion. I take relationships extremely serious, I do commit and I am there for my partner and demand the reverse. I actually want 2 partners so I am less demanding and shit to 1 who maybe is bad at providing one thing the other does. One may be far better for mt debating, intellectual side and needs, the other for my emotional ones.
They would become each other's partner too. I would truly want them to get along and it being a team.
So. Yeah. You don't actually value any of them. You just want to collect them, like trophies.
This is why i set an upper limit of 2 serious maybe 3. It is not at all a game of that.
And they don't want to love or value you. You're just another item to them. If they loved you, they'd want to commit to you. They'd want to share their life with you and make you their priority. But seeing as they also want to share you, then it really means nothing at all. There's no intimacy, no commitment, no real love.
I have not actually had too much experience specifically with this because I am patient and cautious and discuss a lot already in the first week of a potential gf. So, only rarely have I been beyond 2 weeks in with a partner who indeed as you say was a female player that used me and ditched.
It also somewhat recently (relative to my life) that I took the introspective time to fully, truly know that polyamory is a genuine need in me, a true goal, not an excuse for anything. I actually never have cheated, I have instead had threesome urges that over time I realised were far deeper and poly urges and actually had led to breakups before because I told her I still lusted others and realised it is terrible to keep from people.
You also don't think you are man enough to stick to one woman. You think you need multiple trophies to make you happy. This is a very toxic self image. And it won't lead to happiness. They feel the same way. They'd rather collect endless shallow, meaningless, non-committal relationships rather than find someone worth committing to and having an amazing, personal, intimate life with.
Not sure what this means. You define manhood on monogamy and I am confused what the other part means, I do not go for women who want many others (esp other males) at all and I also dont want many others.
So. Yeah. You all have a low opinion of each other and yourselves in this scenario.
I think you have a super simplistic idea of polyamory.