Deviled eggs Q

Whenever I make deviled eggs I really don't follow a recipe I just put a spoon of mayo and a dab of mustard, etc. till it "looks right"

but I was wondering if it's normal to have about as much leftover in the bowl as you put back in the eggs? Not a problem, hubby makes a sandwich out of the leftover "guts" (as I call it)
But maybe I'm putting in too much mayo or something? Or does everybody end up with leftover yolk-mix???? Afterall, you're putting more stuff back into the holes that the yolks came out of, so it does make sense to have some leftovers. Hmmm

Inquiring minds want to know!