As a child "muffin" had 2 senses, Bran or English.
Today the muffin has become a source of adulterated simplicity, drenched with palm oil, fat and sugar. A carb and fat loaded health hazard. They even exist in iced versions...
I make my own muffins. I have tens and tens of variations on a fat-free carb-limited theme. I replace butter with olive oil and yoghurt and try to fill them with as much fruit and nuts as possible to reduce sugar content. I never use white sugar but go for brown unprocessed sugars. As for icing...forget it.
Muffins shouldn't be "perfect" to the eye. Let's get away from the industrial perfect cake movement and back to basics.
A muffin is NOT a cup cake..throw out your cup cake papers and cut your own. Get your children involved, have them cutting squares of cooking paper instead...the end result has just so much class.