How do we NOT do this all the time? If I can get a good deal, I’ll buy the fancier thing, else I’ll buy the regular one. If I finish mowing the lawn in time, I’ll spend some time playing with the dog before my next commitment. If I have some steak in the freezer, then I’ll have steak for dinner, else chicken.
I can’t see how your position can be interpreted to make it make sense? How is life not completely full of an either-or decisions based on conditions?