@Mitch some scientists like calling them "good" and "bad" inflammation. There's no clear line. It's simply a balance. Old buildings have to be demolished for urban renewal. If you're asking why evolution selected for inflammatory processes, you might as well ask why evolution selected for regenerating tissue, as opposed to a static one, like a volvox colony
Now if you nuke the city it allows for a lot of urban renewal, but there's no one left alive to support it, or provide resources for it.
If the inflammation is so strong that it alters how the airways work, it's no longer beneficial, it's harmful to the body, and we call it 'asthma' or a dozen other things, and treat it
@Mitch the scientists in Cowp's link expanded the lifespan of the mice by suppressing an inflammatory cell-signaling pathway.
@Mitch if you reduce the swelling too early, it's not beneficial.
A wound or a lesion leaves the tissues in a state similar to a building half of which is blown up. The immune system has to clean up the debris and blow up the other half so another building can be built in its place.
But let's say the patient is diabetic. That means the blood supply to the tissues is disrupted. It's like saying the streets are always jammed with traffic, so the cement trucks take too long to arrive.
During this time, murderous heroin addict hobos settle in the remains of the flattened building. Bacteria invade the tissues.
The demolition team gets angry and fights off those murderous addict hobos.
Dynamites are being hurled here and there.
The cement trucks still haven't arrived.
Eventually more hobos with different skills and personalities arrive.
The surrounding buildings are damaged due to the hobos breaking and entering, and all the dynamites being flung
Eventually you would have to cut off that block from the rest of the city.
The inflammation people blame the demolition men. They should have known better and not flung dynamites at perfectly good buildings. Maybe they're right. But the real culprit was the traffic jam that didn't allow the cement trucks to arrive on time.
Credits roll. Tom Cruise as Jack, Captain Demolition.
Mads Mikkelsen as Winfrey, the leader of the murderous hobos
Music by Hans Zimmer and Ludwig Göransson