I totally agree, that we can and should keep up the travel spirit after coming home. However I have always found it very difficult to pull through. Especially if you go back in the same old environment, with your friends or family surrounding you. They will treat you like the person before, they are caught up in their own "babylon" struggles, and dont have the same travel-fueled positive outlook on live that you have. For me there for it was always very easy to fall back into old habits. But its a challenge, that can be accomplished imo. If we decide to go home, we can have the intention of spreading this new found energy, and help other people. Its a difficult task, but whats not that is rewarding? :)
--just my experience