In your dissertation trek, you may have a chair and committee who are steady, consistent, and infinitely supportive. If not, my condolences.
Students frequently describe their committees as just wanting to push those dissertations through, get their pittance, devote their time to revising and publishing their own (hard-won) dissertation, and jockeying for tenure. Graduate students also make the frequent mistake of thinking that their committees are reasonable, logical, well- organized, prompt about returning phone calls and manuscripts, and enjoying a balanced life, happy in their work. Rarely.