Why finding the next PM is so difficult?

My earlier suggestion is that no one has the aspiration and ambition to want to be the PM. I clarify, no one in the ruling party or in the cabinet now has that kind of ambition or audacity to want the job. So the present politicians can be totally ruled out. So what's the problem Joe? Actually PAP has created it's own problem for keeping a lid on a potential PM to rise from the ground on his own volition. I remember, one criteria in choosing PAP candidate is to reject those that are too willing to serve or want to come into politics. So no eager beavers. What is happening now is that all the eager beavers will pretend to be disinterested. All will say, 'I am not interested in politics!' And when offer, they quickly say no or want another 5 years to think about it. Another problem that is self created is to look for successful people in the different fields. So all the smart politicians or people with political ambition know what to do. Be successful in their own fields first and wait to be invited for tea. And all are eagerly waiting. Bet you, there will be some wolves in sheep's clothing waiting as well. When the system of picking politicians is such, everyone that is smart enough will want to pretend to be another Zhu Ke Liang, say no three times and let the master wait at the doorstep. In the meantime hide in seclusion and patiently wait for the master to come knocking at the door. The most damaging thing for any PM potential to do is to say 'I want, I want.' Any disclosure of such an ambition is a sure way of an early political demise. So how to find the next PM?