I keep seeing where the mtb folk wear out 2-3 chains per 1 cassette IF you swap out worn chains soon. "Soon" I thought was .75..... apparently I need to keep it to .5.
Cassettes and chains are too dam expensive to have to replace both every 800 miles.
Very possible, given the low RPM of the MTB. Also, paying more money for something does not make it better. I purchase my Shimano cassettes, and the SRAM 1130 chains and they wear good with my wax bath. I had an easy year, only 6,000 miles, I changed two chains and two cassettes.
11 speed chains are changed at .5, an inexpensive Park Tools chain wear gauge with .5 and .75 can be purchased on Amazon.
I have used all kind of chains, and the SRAM has been the best to date. Most chains are marketing hype, and users pass it along to justify their paying an exorbitant price for something that will not last. Most people also forget most of these chains are used by race teams and are replaced every race. They can afford it, I can't. I want something which will last. It's like all these whackadoodle lubes that are sold, it's hype! Make your own, it'll be better.
It all boils down to what works for you! Do you want longevity or do you want to be GQ. I go for longevity. It's like people with Dura Ace, Ultegra, I've left plenty behind me with my 105. Your legs get you down the road, not a name on a derailleur or on a bike frame.