Is it normal i never felt whats wrong with having multiple partners?

This is called Polyamourous, and its an actual classifiction in sexual psychology. Studies estimate that between 5-7% of people in North America and Europe are Polyamourous.

I fall into this group. I literally function best with more than one active partner. I've always thought and talked in plurals. Many people have thought I was a player because of the words I use. However, I have always been extremely selective and don't typically have sex unless I've known someone for months (only 1 exception to that in my younger days), and all of my sexual relationships typically last longer than 5 years (longest 14 years). I have always practiced "poly group fidelity." Its a form of "ethical non-monogamy."

I did not know about this classification until there were problems with my marriage - and my wife and I spent 6 months in counseling with a sex therapist. We both learned a lot about human sexuality and each other in other ways - and were able to find a path forward with our marriage.

Some people just aren’t wired to be monogamous.

I think it's the case of being less devoted to a person, you'd have to share your time and resources and that would result in one getting treated better than the other or one possibly perceiving that to be the case, just like friends the more you have the more issues within your circle you'll find but add the aspect of romance into the equation it could be worse.

If it works for you then there's no shame in it but personally I think it lessens the intimacy factor. "I'm devoted to you...And her...And her...And maybe her in the future" doesn't really scream "intimacy" to me.

As long as you are upfront and honest with people and practice safe sex.

Sure, how else would you find “the one” without shopping around? As long as you are upfront about it with all parties involved then it’s whatever

Im kind of with you on that one I dont really get jealous about that. Id be more worried about her finding a new guy that she would leave me for but it wouldn't really bother me too bad if she had sex with some dude. I dont care if its just for fun but id worry if there was feelings for him from her

I've never felt inclined to have more than one romantic partner at a time in my life. To be honest I actually feel like one romantic partner would be too much for me to handle in my life at this time. I don't see the point in having a lot of simultaneous romantic relationships, especially if physical intimacy is involved, because it doesn't align with my morals, and besides it wouldn't give me enough free time for myself. I need quality time alone, and right now I would feel plenty put upon, and possibly even suffocated with just one significant other.

I do however understand about dating more than one person at a time when when it's noncommittal, and there is no intimacy involved.

Well I don't agree with open relationships and never will but they exist and are a great solution for people who can't be monogamous, though I don't see why you can't just stay single then and sleep around however much you want to.