You are wrong from a sharia perspective, according to every madhab that has ever existed. When the Muslim lands are under attack, jihad becomes Fard Ayn (individual obligation) upon everyone in the region. If not enough people fight, then it becomes Fard on those closest to them, etc until this obligation envelopes the whole world. Since not enough people are fighting, and because the lands of the Muslims is considered one land, and they are one Ummah of brothers and sisters, it has become an obligation upon the entire Muslim population and has been ever since we lost even one hand span of Muslim land, centuries ago. It has been centuries since we have regained such regions so if it is not Fard now, when will it be? See this book here: http://www.kalamullah.com/Books/defence.pdf