I love perpetual motion machines. Absolutely fascinated by them. I am quick to dump on flat earthers and antivaxxers and understand the science against perpetual motion just as well.
That said, given a strong UBI or a grant of a billion dollars I would GLEEFULLY spend the rest of my life working on trying to build a perpetual motion machine. Sometimes we just have to remember that if we are honest with ourselves we are not as rational as we would like to believe.