That is strange to hardly see a deer in 5 years! Obviously, they are neither feeding on your land nor traveling to feeding areas, but perhaps bedding there after dark.

A remedy would be a food plot - these are legal in Missouri I believe. Doesn't have to be huge and you could even start with a small plot put in with garden tools (a tiller is helpful) and expand each year. Also, perhaps you are spending too much time prepping stands, checking cams, etc - this can cause deer to avoid your area during day hours. Best bet is to stay entirely away a good month before season - let the deer's first notice of you be right after the arrow passes through them!