I think you're right. I think I could've put this better: as you said yourself, even though going back to uni will take getting used to, you're excited about it, right?

It comes back to the feeling, I guess. Sometimes challenges excite us, sometimes they crush our will to live. It comes back to where is this going to take me, and how do I feel about it.

I think one of the reasons so many divorcees comment to say they're happy single is because they know exactly how dating ends (best case scenario), and it doesn't excite them.

So if having to get used to something brings up negative feelings, then it's not for you: that's what I meant. Thanks for giving me the chance to explain, and good luck with your new exciting challenge! :)