Surveys by record keeping organizations indicate that recurve kill shots average 14 yards. Compound kills are only 3-4 yards further on average.
I practice at 30 yards but keep my hunting shots at 20 yards or less (give or take a tad). Last three kills; 21, 16, and 8 yards.
My favorite distance is 13 yards -- the distance I practice all winter and on bad-weather days on my downstairs range. Inside 10 yards makes very nervous that my breath molecules will slam into one another and the deer will hear it!