I think it is known as dignity, Alfie.
Had he stayed ... as he was entitled to ... his party risked being rent asunder and the country along with it.
Now they can progress with running the country under new leadership as they watch the entertaining sidewhow taking place on the other side of the house.
Maybe the SNP initiative to take over as Her Majesty's Opposition is no longer as risible as it once was.
Cameron always had the intention of presiding over No 10 and resigning before the next election but he sorely misjudged the current British electorate. If ever there was a reason for proportional representation this was it. Cameron thought he carried the electorate with him but his judgement was sadly lacking, he fell into the trap of thinking the people of London were representative of the UK...they aren't!
Cameron failed to win the Referendum despite the scaremongering, the attempts to use officialdom to persuade the undecided and the despicable threats to pensioners. All in all a rather nasty piece of work by any standards. Cameron wrongly believed he would carry on just as before but he was wrong, he had to option but resign.
Now he has gone it is being left to Theresa May to pick up the broken pieces and forge a way through. She has already stated that she will not invoke Article 50 until the end of the year thereby creating sufficient space to undertake the necessary soundings while the dust settles.