"There's still a part of you that loves the game but I think a lot of managers these days have big expectations put on them by a board of directors," former Tranmere Rovers manager Watson told the Daily Post.
"They want everyone to win the league or get promoted and it's totally unrealistic. I don't think it's a very enjoyable job.
"If you got a job in management now you wouldn't sell your house and move three hours away because you might only be there six months.
"You couldn't make any long-terms plans in any job. I don't miss it at all."