Question

Suppose I have a simple question like whether it is proper to crown as leader over a people that is supposed to be a light unto the nations someone indicted for bribery, fraud, and breach of trust; or a more complicated question, like whether to donate money to feed poor children lunch today, or to donate to some future-oriented cause aimed at saving humanity—for example, creating humans on a spaceship and sending them to another universe, so that when we are lost at least there will still be sentient beings enjoying themselves somewhere.
Questions where it is hard either to get down to all the relevant details, or where the issue itself is shrouded in uncertainty and it is hard to calculate how it will turn out, or even whether it is going anywhere serious at all, etc.
Is it reasonable to decide that what most smart and upright people would decide is probably the right answer?
Or should I make the effort to reach a decision myself despite the effort and waste of time? (Assuming, of course, that I myself am somewhere among the smart and upright.)