I am totally opposed to opening an unnecessary can of worms. The question is this: Is asking a man about his whole life unnecessary? I think it is very necessary because being a pastor is not what you do in the office and in the pulpit. It is your whole life, including what you entertain yourself with and what you do in your spare time.That notion of the unnecessary opening of worm cans is hard for some folk to wrap their heads around - however, I think it full of prudence and wisdom.
A church who doesn't ask these question is, IMO, not taking seriously the commands of Scripture about qualifications for pastor. They are looking for a CEO who does right things in the office, the church structure or ministry, and the pulpit.
A church who asks these questions recognizes that a man's whole life is vital.