I know I went back and forth for some time about annealing. I shoot quite a bit of 7.62x54r, and while not the most expensive brass it also isn't lying around everywhere.
I neck size my brass. I know it has fallen out of fashion for some, but a rimmed cartridge responds well to neck sizing and doesn't have the same concerns as a rimless design such as the 308.
Also, a military rifle generally has a larger chamber, along with a robust extraction system.
I started developing cracks in the shoulders of the brass, so decided to try annealing. I first used the torch and socket method, getting good results with a metronome device in my phone to time the cycle. I have gone well over 25 loadings without full-length sizing.
Since then I've gone with an Ugly Annealer. While I still have to overcome some design problems inherent in the machine regards handling rimmed cartridges, overall I like the machine and the results.
I can say that I would indeed purchase the same machine again, for the job I do. If I shot mostly 223, which is lying around to scoop up (much like 38 Spl and 45 ACP used to be decades ago) I would probably just shoot the stuff 3 times and trash it.