I hesitated to comment because we've hashed in other threads the various views on whether polyamory is a fixed part of someone's nature, or something one can choose.
I respect people who feel it is an immutable part of their identity. It is wonderful to know yourself! My own take on this is NOT an argument with your position or the validity of that. I feel I need to say that first, based on conversations that got...heated.
Personally, I'm all about free will. I want the freedom to change my mind, to be what I want, to evolve as I please and to not be held to absolutes. It might in fact be part of my very poly-ness, that I don't like the idea of lifetime commitments. But in the same vein, I can't take an identity label and say "I AM THIS AND WILL ALWAYS BE THIS." I can say that today, this feels right to me. A few months ago, it was that. In a few years it might be something else. And I'm gonna need that to be ok, since I figure I'll stop discovering my own nature when I'm dead.
So for right now I can be mono, because mono is working for me and I'm happy in it. Though I'm more...monogamish, maybe. There might be exceptions in the future. Hell. There could be anything in the future. My mindset is pretty flexible. But I was doing poly, and poly got to a point where it was not working for me. When I wished I was not poly, I stopped doing poly and transitioned to doing mono. For this phase, however long it lasts, a year or a couple of decades, whatever...I am living this way for now.
There are things that are solid identity things to some that aren't for me. Like sexual orientation indeed, I am straight-ish, I'm like on the bisexual spectrum at maybe 10-15% homosexual. I'm mono-ish-for-now. Neither of these things feel like Big Important Stuff that I need to dwell on or define. I'll do whatever. *shrug* It doesn't matter. That's how it feels. Now masochism...THAT is a Big-Important-Who-I-Am thing. One partner, two partners...do I have time for both of them to beat my ass? Male partner, female partner...who cares, are they a Sadist? That's the important part. I need what I need. I am who I am.
So, TL;DR version...wishing I wasn't something doesn't apply because I can choose to not be that/do that. I do however wish that more people were open to negotiation and more emotionally flexible about it. I'm sad to know that my man would be hurt by me becoming involved with another man if I did choose that one day. I can easily not choose that now. Today. But I don't know the future and I hope I never have cause to hurt him. I shall endeavor to choose not to. But. I have a changing nature and I don't know 100% for sure. It's a risk we take. All I can do is endeavor to act ethically and make sure he knows what my ethics and standards are.