Pilots are no stranger or weirder than any other group.. Career changes happen all the time. In fact, it is probably more common than you think. Even the most well researched career decision by a highly intelligent person that "thinks" the airline job may be a perfect fit can have "life changing moments" that eventually make the flying career unsuitable... Life happens.... People change... There will always be those that love the job and do it their whole life. Then others (in this thread) that find peace and happiness elsewhere...
It is a gift to have choices....