My experience was similar to Cindy and PDA.
While in England in the 70's rigid sigmoidoscopy was the norm. GP performed only if family history existed.
In old days, nurse would perform initial including bloods, urine, then 2 qt enema, apparatus disposable. Later doctor would perform head to toe exam, all parts touched, then anoscope followed by evaluation by sigmoidoscope including retracting of plunger viewing illuminated by light.
Here in the states, internist would view with anoscope.
Wellness exams do not include anything below the waist, at least not in Vermont.
Young docs are shy, no genital nor rectal/colon exam, period. Standard of care has been formulated on statistics. People in age band, risk is established then checks put in place. Prostate cancer in old a matter of course, with most dying of other disease, hence, little emphasis on detection. I always ask for dre,, and PSA. Insurance pays for the asking. one would think the humans are not statistics, and test ought to be performed.
Only was is to ask for urological exam.
Gastroenterologist, now examines with a flexible sigmoidoscope in which prep is not nice, i.e. the liquid.