Cool theory, but the same reason I pull my shoes off by standing on my heel and pulling, despite it saving me no time (I will have to untie them anyway when I put them on again).

Humans are short sighted, want to solve the situation immediately and will do the laziest thing possible to accomplish a given task.

pop each lace down one eyelet and you'll never have to untie them again if the heel is both sturdy and forgiving enough