When you think about it, perpetual motion machines, if they are possible, aren't as useful.
Truly perpetual machines that just work on their own forever won't ever exist. They are eventually going to need some sort of maintenance. And we already have ways to get "perpetual enough"(please don't be triggered by this) by draining energy from natural systems, even though it's not that good as other sources of energy. The only use I see for "perpetual" motion machines would be really durable batteries(such as 10 years or more), but they would probably waste a lot of space compared to their energy output. Maybe it would be inside a space ship or something, but then again, they are going to waste so much space it's not going to be worth their watts/s output.
All you're saying is "perpetual motion machine is impossible because it would violate the 2nd law of thermodynamics", except you're saying it in a retarded brainlet way.
IF an actual working perpetual motion machine was ever made, it would literally give us access to an infinite amount of energy. It would change the world, and maybe even the entire universe because it could be used to prevent the heat-death of the universe