Abusive and power hungry elders are not in the majority. Most are sincere believers who are put on to do far more than is reasonably possible.
Combining work family life and congregation duties is a ridiculous burden for most. Every congregation has its fair share of whingers who expect elders to be at their beck and call to sort out all their personal problems. The branch make unreasonable demands on elders. Elder's wives and children pay the price.
A minority are guilty of abusing their power.