Too much fuss made over neck sizing.
If you neck size, you're still gonna need to FL size every so often anyway or your brass is gonna get too tight to chamber.
Properly set up to minimize shoulder bump, brass is not overworked and there are no "life expectancy" issues, and the need to trim is minimal.
I get at least 10 reloads outta my brass, and usually I retire them "just because" and not due to any warning signs.
This discussion is no different than barrel cleaning, break-in, and brass cleaning...everyone has their opinion, and swears to it.
I full-length size everytime, every caliber...JMO, YMMV...