I have found tilling to be destructive. While in some places it is needed initially to break down clay sods, it really disturbs and destroys the layered biome of what you are trying to promote. Then you have to amend and suppliment the soil and hope it all settles back out. While tilling year after year looks nice, it is a lot of work.
I was shocked the year I dumped 2 ton of hay on my patch of virgin prairie earth you couldn't put a shovel into it was so dense, and came out in the spring with black gold. It composted all winter, brought the earth worms up and let them do their thing, smothered the weeds/grass, and gave me the richest soil I've had i a long time. OC then I built a barn over that spot. LOL
Moved the garden and repeated the process. but still.