Opening hours bias?

I noticed that I tend to strongly favor the stores with longer opening hours, regardless of whether I have any use for those opening hours - currently or at all. I am not sure why. Shopping during the day in the same stores where I usually shop after 9pm or on Sundays can be attributed to the force of habit, but I notice that I also tend to favor small specialized stored that close at 7pm on weekdays over the ones that close at 6pm, even though I don't usually go there on weekdays at any rate, but on Saturdays when both are open.

I wonder why is that, and is it just me or is it some common phenomenon?