Parents do appreciate the time and effort. I know I have time and time again. What they don't appreciate is watching the coaches kid who is no better then any other kid, never leave the field. What they don't appreciate is saying your team is SELECT when you barely practice. Then they go to a tournament get smoked by a team that does put in the effort. What they don't like is watching the dad coach scream at his team and embarrass 10 year olds in front of the other team and parents in a game.
Simply said, just because you played and want to put in the time for your kid doesn't mean you are qualified to be a coach. In this case you need a lawn chair instead of a whistle. You aren't appreciated because you treat people terribly and everyone sees it but you.......