As far back as I can remember myself, pretty much since kindergarten, I always had a crush on someone. Sometimes I had a crush on two people at once and felt conflicted and upset about having to choose only one. I grew up in a traditional family with law-abiding non-confrontational parents, watching romantic classics, while adhering societal norms.
Then I grew up and went all in on the "american dream": got a job, a husband, a mortgage, a couple of kids, planted a few trees, and seemed to have riched this ultimate cision of what my parents and the society taught me what life should be all about. To my surprise, I still felt like I was missing something... I still had crushes on various people I met, just like when I was growing up, but never acted on it, because "I wasn't supposed to". However, after having my second child I realized that the amount of love I had for my first child has not decreased. I realized that I have an infinite capacity to love.
I started thinking about non-monogamy and polyamory, consumed all the literature I could find about it (my favorite book on polyamory by far is "More Than Two"). All of that reading and thinking eventually led to conversations with my husband about opening up our marriage. We talked about what that could mean for us and what the implications could be, and decided to go for it.
This Medium article I found describes pretty much how I feel about polyamory - it's the permission given by myself to myself to explore relationships with the people I meet to take any shape they become. Polyamory to me is the freedom to explore deep connections with the people that appear in my life without following fake norms and restrictions created by society in an ethical way.