I am polyamorous and have been for the majority of my life since I began having intimate relationships.
In my late teen years I was not familiar with the term poly, but knew that I was not interested in being monogamous. I enjoyed dating more than one person but I guess at that time I would have considered myself in open relationships. That is, my other partners did not necessarily know of each other and I did not feel the need to discuss any parts of my relationships with the other parties involved.
Poly is far from being 'slutty' or having much promiscuous sex. In retrospect, I think people involved in serious, long-term poly relationships find that there is much communication and work that goes into these relationships. There is negotiation in terms of whether one of your partners may be considered primary, and others secondary or tertiery.
Further negotiation may take place regarding what intimate acts may or may not be involved in all relationships and if some/all parties may be fluid bonded or not.
Poly works for me because I do not expect that one person can provide me with every facet I am seeking in a partner, and I anticipate that I cannot do the same for them. Also, I am queer and date men/women/transgender folks so I may find myself in a relationship with more than one gender and perhaps dating a couple at any given time.
At the moment, I am not seeking a primary partner but prefer to be considered a secondary. That works for me because I am extremely busy with my career (always working more than one job to pay the rent and seek further occupations I may feel more passionate about like toy reviews!), I am a parent, I have several pets, I am an active volunteer, I have flexible part time studies and I like my down time just for myself! I think the majority of my fellow EF colleagues know what I am talking about, LOL.
But just because someone isn't looking for a full-time relationship doesn't mean you cannot have something part-time, meaningful and committed.
I welcome open and respectful discussion and I am open to answer any questions of curiosity.