I have 12 pairs of shoes. During the week I rotate my 4 black cap toes, and black loafers on Friday's. During the weekend I usually wear one of my two pairs of suede loafers, or one of my two pairs of boots if it's bad weather.
That means 9 pairs get worn regularly, and the other 3 are worn maybe once a month. The only shoes I'd still buy are a pair of burgundy shell long wings for weekend wear and black bal boots for when it's bad weather during the weekdays.
Being limited to wearing black cap toes only during the work week really limits the amount of shoes you can wear, and consequently can buy. I suppose it's a good thing.