I haven't plowed in 30 years. Notill or vertical since. Made no sense to plow to loosen, disc to firm, cultivate to dry out, plant then pray for moisture. Besides totally upsetting the bacteria, micro-organisms, worms etc.
Here is the best argument for plowing: The missionary zeal of the non-plowers. Their obsessiveness to secrete their always identical comments. Their incapability just to regard a little footage showing a nice Deutz-Fahr 6165 with a Kverneland plow without getting obsessed to make such stupid comments. That's it what makes non-plowing or no-tillage so suspicious.