Why do African leaders wants to remain in power?

To effectively answer this question it behoves that we first note the differences between African Leaders (especially Sub Saharan) and the 'Others'.

In Africa tribal chieftaincy gains its teeth from the populace, who view every aspect of life from tribal considerations. Since no African leader anticipates a win in any election without the majority of votes coming their way from their tribes, this makes them tribal chieftains, and actually the pseudo-nationalists they claim not to be.

The tribesman's push, which draws its venom from the common desire to 'dominate' the other tribes, informs heavily the leaders' priority to do everything to satisfy this 'tribal blackmail'. In my view, this is the genesis of greed, corruption and despotism.

Military coups, murders, the sheer lack of institutions of control and moderation (like anti corruption watchdogs, even diplomacy, simply become a means that must justify the end.

Once the above ills of governance are in place, it becomes necessary to cover ones tracks to cover the leaders' backs, and offer 'protection' to their cronies, the 'brothers(& sisters)-in-crime'. When African Leaders find themselves in such obvious consequences, the last thing in their minds is to quit leadership.

Quiting leadership, with another opposing dictator in power, means scrutiny, investigation, sabotage and a malicious call to take over all personal and national gains, legally or illegally acquired.

Therein therefore, lies the reasons for clinging to power even when it's time to leave.