You know what? I'm starting to understand the actual underlying plot of the movie series.
After the events of Die Hard 1, McClane developed a crippling case of what could only be described as a variant of the Münchausen syndrome.[footnote]Traditionally, Münchausen syndrome is when a person start repeatedly faking certain illnesses in hopes to draw a sympathetic attention and support to himself. This often happens after a person was authentically sick once, got used to the attention that he received at the time and starts wanting the same amount of attention once he's cured.[/footnote] This version, however, has him secretly manipulating crime bosses into planing daring heists in areas, where he can play the role of an innocent passerby who can take matters into his own hands and save the day.
Of course, having secret ties with the underground world is not cheap and McClane doesn't look like a rich man. That's simple to explain. In the chaos of the Nakatomi Plaza raid (DH1), McClane managed to stash away some of the stolen bonds for himself. He's been keeping his hidden wealth a secret, since he wouldn't be able to explain to the authorities why he suddenly became so rich and with it, he's been living a double life as some sort of information broker for crime syndicates, which is how he's able to set up these events.
Naturally, this all has to play out as realistically as possible, so McClane only manipulates the criminals to a point where he knows when and where they're gonna strike and he always communicates with the criminals through proxies, so that they're unaware of his involvement.
Once McClane has gotten a chance to save they day again, he gets to relish in the instant gratification of being the hero. But once the attention dies down, depression sets in. Of course people were grateful of his heroic deeds, but they're not gonna throw him a parade, every time he brings it up, and that's what he's after; he needs his next fix. He starts drinking and complaining about how he should be treated with respect, since he's the hero. This psychological breakdown is what causes him his poor standing at his job and thus why he never moves up in ranks and is sometimes without a job, at the beginning of each movie. His syndrome is also what's causing his own family to distance themselves from him and he doesn't understand how best to reach out to them in a normal healthy manner. Since he was having marriage problems with his wife, at the start of the first film, he's learned to associate "Save the life of loved one = they will love me again." This is why he often manipulates these giant heists, so that they end up putting his family members in harms way, so that he can play hero again and reconcile with them.
It truly is a sad story about a very pathetic man.