Is it normal i'm mad for wasting my teens only having one crush?

I'm an idiot because I was brainwashed as a child to believe that relationships could only consist of one man and one woman and I came to disagree with this notion? Really? Explain please.

If that's what you want for yourself, fine. Everyone is different. However, I think it's abundantly clear through thousands of years worth of observations on human behavior that monogamy isn't an innate human trait.

I said polyamory, not polygamy. But I do support polygamy provided it's not abusive and the participants are willing.

I worded the question in a silly way on purpose but the meat of it is just that I think we need to relax on the monogamy thing. It's not natural. If people choose to try to live that way, that's fine. But there's other types of relationships besides 1 man+1 woman. We have this idea that monogamy is the only way, the right way, hammered into our heads and very few question it even though we see the failures of attempted monogamy constantly every day. To have more than one partner at a time is viewed negatively. It shouldn't be.