these lines: "They say if I renounce Islam, my life will be spared. But it is better to die with belief than to live with unbelief."
also establishes the relationship among the believers, making them one unit because of (in addition to their common faith) their common love for the Prophet, Sall-Allahu alayhi wa sallam.
logic, because of its own blinders, it will have to come to terms with the facts on the ground: Muslims treat their Prophet, and all the prophets, with utmost respect and they simply cannot tolerate any willful insult and disrespect. To compromise on this issue would tantamount to compromising one's faith. And no one has a right to demand that. The blasphemy laws in Muslim countries like the one in Pakistan, are not only based on solid and agreed upon juristic grounds, they express a fundamental value of the Muslim civilization. We need not offer any apologies for that just because the forces of profanity seem to be powerful.