I think SPD's are mindlessly easy to get in/out once you are used to it. Automaticity. Just like a manual transmission in a car, if you drive. You don't even think about shifting, just what you do.

Didn't have time to explain on my previous post w/ pics.

I use SPD shoes when cycling, most of the time.
Always to pedicab.
Always for fast/long recreational rides.
Always for long commutes.
Always when touring/traveling.
Almost all of the time when on trail.
Almost all of the time when pulling a trailer.
Vibram Five Fingers for grocery store runs, neighborhood hops, swimming holes, friends, neighbors, etc.....Shimano A530's.

Anyway, I have a pair of Pearl Izumi's similar to the pic posted and noglider's. Mine are about 5 years old and are my primary shoes for pedicabbing and frequently, commuting. I wear them for up to 12-16 hours at a time during crazy pedicab times or long hauls. Lots of walking. Very comfortable. Mine are the old school version designed for adventure racing. I am on my third set of SPD cleats and 2nd set of insoles. Insane durability for a cycling shoe with a ton of walking and biking miles. SPD cleats are not easy to wear out, unlike the candy's i have used. I will try to post a pic of my well used shoes if I have a chance.

I also use the Keen commuter sandals for spring/summer use. Love them because I don't need socks and can get my feet wet, no worries.

The Keen Austin Pedal are extremely comfortable, walking and biking. They are also casual/low key. In austin, I use these as my winter cycling shoes or when I might need to appear business casual.

And yes, I have ridden with cages/traps/straps. Better than nothing, but still a compromise. Actually, I think they are more difficult to get in and out of compared to SPD's.