I think it's a part of the process. I think you go back until you regret it as you leave. Part of it is familiarity and part of it is habit. Maybe part of it has something to do with taking what you want and leaving he rest. Just be careful that you don't wind up "on-call". He'll have a better deal than he had. I also think we need to take the help seriously that we are given. Your parents are happy you are there because they want to help you build a new life, not cave into the old one.