In most cases diversions to ensure you are almost always within gliding distance of non - "tiger country" will only add a few minutes to your flight time, the difference is negligible.. for peace of mind and a more enjoyable flight, why not. Granted its not always possible but its up to the pilot to set his own minimum safety standards, limits etc, for me,if I can help it, it will always be flying over country I am likely to survive a forced landing. Its not something I'll lose sleep over planning the flight but minimise risk where I can