It's not fightable or optional, so it's less like starvation and more like gravity. Humans have decided that we'd like to "dispose" of aging, but unfortunately reality has this annoying habit of not responding to our categorization and despite thinking of it as a disease we cannot
fight it like we can other diseases. Those other things you mentioned are considered outside of the usual because we have been able to make them less common through effort; despite all our effort though, aging isn't something we have that control over. We're all gonna die, of old age or a short-sharp-shock, at least until we figure out some wild medical breakthroughs.
Once we have those breakthroughs, sure folks might start thinking of aging as a disease that's not "normal" or a thing that we can actually avoid, but until then it's a fact of life, same as gravity, the sun, or the tides.