I have some good news that you may not like hearing: Islam won't take over the world. Its fanatical adherents would like to; they just can't. Not without some civilization-ending catastrophe to pave the way- such as a major asteroid strike, a plague wiping out most of humanity, or some other "science fiction" scenario. Sure, those things could happen, but they're not likely, and not something you can control, so you shouldn't obsess over it. Besides, at that point Islam would be the least of your worries.
Still, it is completely self-defeating to support policies which empower the fundamentalist Muslims- such as the modern secular Crusade led by the US government. This does nothing but recruit more to their cause, and give them more reasons to emigrate from the war-torn region.
It's like kicking a hornet nest and being surprised at the results. But these are humans we are talking about. You can't annihilate the entire nest without killing more innocent people than guilty ones. That would be just as evil as what the aggressive Muslim fundamentalists are doing.
If it weren't for the US government constantly going to the Middle East (with money stolen from you, to the cheers of fans of never-ending war) and repeatedly poking Islam with a sharp stick- giving it energy, motivation, and justification with each poke- Islam wouldn't be spreading so much and wouldn't be an issue outside that one part of the globe.
I realize Islam has a nasty "convert or die" outlook. This is the Islamic year 1436; their 15th Century. You wouldn't happen to remember what was happening in the New World beginning in the Christian 15th Century and beyond, would you? Does the word "Conquistador" ring any bells? How about Pizarro? "Manifest Destiny"?
"Convert or die" is always wrong, always barbaric, but it isn't exclusively Muslim.
The only real danger is the danger which always lies in politics. Until people get over the sick idea that it's OK to govern others, and that a majority can vote their will on a minority "for their own good", there is always a risk that someone will outvote you and impose their silly or destructive rules to govern you in a way which violates your Rightful Liberty, and which you object to. Nothing can make that right. It's long past time to stop repeating this destructive pattern.
(Also, check out the next post for a little follow-up I didn't have room to put in the paper.)