I agree with this philosophy completely. I certainly am not going to crack out my registry quality coins which cost hundreds or thousands of dollars each. At the same time, I enjoy building an album collection of gem bu Jefferson Nickels. Both raw and slabbed coins are rewarding in their own way.
I have my U.S. coins in self slabs, which is my preference. Coins I buy already slabbed I keep in their slabs unless its an ancient, then its busted out asap. But in general I prefer Raw. Hardly any of my U.S. coins go pass the $200 mark so for me it isnt much to worry about.
Because most ancient collectors like to hold them. We like to hold history. Plus the coins had been buried for 2500 - 1400 years so they have been through it all...cleaned, exposed to elements, scratched most likely from cleaning, not much more harm can be done to them. Most modern collectors dont realize the rules for coin collecting dont apply nearly as much with ancients. Thats what makes them so appealing to me. David Hall always ends his videos "have fun with your coins", well in slabs I dont find them much fun, with raw ancients I find them actually fun