Originally Posted by noisebeam
Because it is as easy to slip on my Shimano sandals when leaving the house as any other shoe.
And also because if I don't and instead wear my regular sandals I already have on to get a coffee, that it is not awkward to ride a mile or so. Far from awkward in fact, the only reason I don't ride faster is because I have no need to when cruising the hood to get a coffee.
I agree with all that

It's just that... what's the downside to the clipless/combo pedals? The only downside I can think of is the learning curve for clipping into single-sided pedals. And there are major upsides, such as the fact that you can comfortably ride much longer distances in street shoes. Maybe not an issue for me, but I often want to do that.