I am very happy I have two use years right now.
We love split stays, I have 6 waitlists set right now, getting into the resort i want is the most important thing to me, even with the extra headache.
I also didnt know when purchasing what my travel patterns would be. I assumed spring travel. I had no idea I would own over 500 points during my first purchase

So far it has actually been fall and winter. The original uy works well for the September travel we want to do often because of low point season. We dont mind the heat. It was very relaxing and pleasant to us being there in the quiet season.
My second use year is December, which was just a coincidence because a contract popped up and I needed points asap. Now im so happy for it because we have discovered that we like short vgc stays often and we get to spend the holidays there this year without worry about banking deadline should we need to cancel.
I am fully in borrowing mode so there's no chance of me losing points and I dont see that changing much

As others have mentioned, the transfer rule is the worst part about it. If it wasnt for that, this would very simple (To me). Since it is there i agree it is more difficult of course. Is it worth it is dependent on the individual and their needs.
Ive heard of people selling contracts because they got tired of two use years. That's crazy to me, but I guess everyone has different needs.