Is comfortable enough?

Is it enough for shoes to be comfortable? My criteria for comfort is wide, flat and flexible. Before even trying on a pair of shoes I try to bend them. If they don't bend easily in my hand, they're rejected. My shoes have to walk with me. I don't wear slip-ons, or classic "pumps," because they just flap and fall off my feet.

Recently I noticed another required characteristic for shoes. They must energize, yes, with really great shoes, they're not only comfortable, they make walking effortless.

My new sandals energize; now I have to find energizing shoes, which are also light-weight, flexible etc.