The Lovable(?) Selfish Incompetent

I'm going to describe a character archetype to you, found in many modern comedies. These characters have an extremely high opinion of themselves, but are generally incompetent. They are also typically portrayed as selfish and self-absorbed, though occasionally one will get a peek at a supposedly deep-seated vulnerability or "heart of gold" in extreme situations. Finally, and essentially, the characters are not presented as antagonists even though 85% of the time they make a good person protagonist's life harder (either through the aforementioned incompetence, selfishness, or both). From the show's perspective, one is clearly supposed to find these characters lovable -- if only in a "oh, that rascal!" sort of way.Examples of the archetype include:Tom Haverford (Parks and Rec)Bender (Futurama)Kayla (Hacks)My question is: why? Why are we supposed to like these characters? Why are we supposed to view them as anything other than antagonists? Why is the incessant message that they deserve…