I have a little different perspective on spinning plates.
Let's say if you find the perfect woman for you, you'll stay with her forever and ever.
The thing is, what is the perfect woman ? I'm sure you can't really answer that. You'll just come with the common things (beautiful, interesting, BLAHBLAH)
Spinning plate let you find that anwser, or at least get closer to it. You'll make mistakes, you'll work to correct them, you'll know more and more what's you're looking for in a woman, what do you like, what you don't like, what's a deal breaker.
You will be able to grasp some new concept, to put names on some of your feeling.
You say you met the perfect girl ? Let me laugh (no offense). There are billions of girls, and I guarantee you that you can find better out there if you put the efforts in it.
Basically, you'll learn more about yourself.
In the end, you'll maybe come up with answer.
It could be "I want to spend my life with a girl like this and like that"
Or "I want to stay a bird that keep flying and meet a lots of girl for the rest of my life"
Or something completely different.
But you can't say, without those experiences, "I know how I am, what I want, and what I want to be".
So yeah, don't settle and learn more about yourself before segregating you in a way of life without really knowing anything.
Spinning plate is about discovering what you want to be.