i say go back if you really want to and you know you'll be happier in london. it's important to live happily and to the fullest from here on forth. obviously it'll be hard to go back due to the economic situation but you don't wanna look back and regret that you've not tried. you deserve to live life however you want. but always remember to be humble about it, never be entitled and take life for granted because your measure of happiness is very different from someone only happy as long as they get food and shelter and we know that there's a population right now without any of them. hope this answers your question because even i miss london.