I think the popularization of head on attacks, is a simplified prisoner dilemma game where both sides decide to cooperate.
Vast majority of players would accept and commit to a head on, knowing the risk that both planes will (usually) die or at least come out severely crippled.
So in this model I will define “win” of getting a kill.
Player A and B has both options. Head on, or dogfight
Head on attacks has highest chance of death and kill, sending both players back to the hangar.
Dogfight has lowest chance of death and kill, but can be third partied the longer the dogfight takes.
There are 2 scenarios, since rejection of head on also forces a dogfight (escaping isn’t relevant in this model)
Scenario A - Both sides head on
The chance of both sides winning is much higher, taking home with some RP/SL, after a minutes long flight.
Scenario B - Both sides dogfight
The chance of both sides getting a kill collectively drop, but with the possibility of one side leaving unscarred.
Thus, we can see, most people rather take the low risk route. I’m aware of the fact that this is highly simplified and in reality things can end differently, especially with vastly different planes (P47 vs Zero), but I wanted to explore why people, including myself, prefer head ons.