Tiny apps are responsive. They actually listen to my mouse clicks and my keypresses and they dont stop working for some weird processing to go on in the background, of which I have no comprehension of nor do I want to know about.
Many times I'm forced to figure out how the program I'm using actually works on the inside, all because of bad design.
The small apps I use are not of this breed, they do what they're told and they give me feedback on what is actually happening so I don't have to play at sherlock holmes.