He who laughs last does so because this cross-genre exploration is a wrap. A-ha-ha-ha
Superheroes are all too easy to poke fun at. Fantasy is frivolous; science fictions of the past superfluous.
The seriousness of war and crime still allow for madcap dissection. War comics could either berate the enemy or at least stare them down; or they could deride the taking of sides or the whole rationale for war.
Keystone Cops showed an early inclination to laugh at the law and we presumably get some joy from seeing evil taking a tumble.
Comic drama finds its natural home in the dailies. This doesn't mean that everyone's as suburban as Hi and Lois but, sure, there's a commonality with what you find in sitcoms. Note the number of times that even strips like Hagar the Horrible and Wizard of Id veer into domestic drama with a humorous tinge.
Comedy and adventure have long gone well together and action comedy is only a pratfall away.
And we agree, intermittently, that romance is a suitable subject for humour as are more, nyuk, adult concerns.