I stated that before, balls should last "forever" as long as they don't go into the water.
I use to play alot of golf years ago 3-5 rounds per week and got down to an 7 handicap real golf. I'd use the same ball all year, and i would hit it 300+ yards new out of the package and at the end of the year it would still hit 300+ yards.
I use the Black X balls, but 650 per sleeve is insane. considering i lost i have actually lost 1 ball in all that time, went into the drink.
but had to replace balls at one point 1 every other day I'd get a few round in and then done.
I have actually climbed fences and gone into corn fields looking for balls.
You are right balls should not WEAR out ..