is there any benefit to the employee that of being salaried and what can you do if a job asks you to change to a salaried pay?

It just seems like a BS way to try to get you to work more hours for the same pay. I know some places require OT pay for 40 hours but I'm assuming there's some kind of loophole or something even there or why would they do salaried at all? Im currently hourly and I feel like at my job if I ever move up they'd probably offer me a salaried position and I don't see any reason not to negotiate that but idk what you would say other than salary is a load of corporate bullshit invented to exploit the worker and I'll stick with hourly.