Let me give you my views...Based on my knowledge of my religion.
It is the reponsibility of every Muslim (Including me) to spread the message of god. I can do that through speeches, conduct, business conduct, ethics, etc.
That is where my responsibility ENDS. It is NOT the responsibility of Muslims to convert others to Islam. That depends on the individual to accept or reject Islam.
The mistake that people like Bin-Laden (he has other grievs about the middle east) and people like you make is that you start playing god.
You extend your responsibility from only spreading the message to forcing people into accepting the message. That is a HUGE difference.
There should never be forceful conversion of non-Muslims to Muslim.
I hope I am clear in my statement. That is the way I see it. Other scholars may see it different and I disagree with them. And I am not obligated to follow them.