As mentioned, think of ways of how to make your front door less appealing to other front doors. You can erect grilles, grates and shutters but that will drawer attention.
Transparent anti blast and anti vandal window film is available if it will help you sleep better:
http://www.guardianwindowfilm.co.uk/win ... ndow-film/
http://www.gpwindowfilms.com/blast-film.html
Beefing up your front door using one of these could be an option too:
http://www.bbsf.ie/bbsf/Main/Product_1296_01.htm
Again, it's all down to your specific situation and location. Personally, I'd stay put, makes friends but keep a low profile, make your preps, and fortify your home as best as you can without giving the game away