Balancing Trailer Tires - yes or no

Seems to me a round tire will perform better and longer than an oval tire. Seems like there would be less stress on most components. I may be wasting my time and money but I really don’t care either. I have had to have mild arguments with some installers and those usually walk away shaking their head with a confused look but in the end they’ll do it. I also think more and more dealers are asking if I want them balanced.