Some like to go peepless, and I'm glad that works for them. But for me, I use a relatively large peep, due to my astigmatism. I've found that a peep field just a hair larger than my round (Spott Hogg) sight gets me centered and right on during low light target acquisition.

When I set up a bow, I initially use No rear peep. I am right on at close distance for initial string stretch and rest alignment.
But when I want arrow splitting accuracy, heck yeah I want my peep installed. Keeps me consistent shot to shot.

One less thing to worry about when the big guy walks into my shooting lane! Good luck

I use a peep as well as a kisser button. Between the two I know I am lining up to exactly the same spot every time and my accuracy and grouping got better. Now if only I could find something that stops the shakes when that turkey or deer walk by!