The most documented life of a Prophet is of Muhammad, Peace Be Upon Him. But, the most attacked part of his life is his marriages.
The Prophet Solomon had many wives:
Solomon married daughters of neighbouring kings, which according to 1 Kings 11:3 resulted in a total of 700 wives and 300 concubines. His main wife was the daughter of the Egyptian pharaoh. Source: Looklex Encyclopedia
The Prophet Muhammad marriages were not for a personal urge:
One of the difficulties that non-Muslims encounter when reading about Muhammad is that unlike Jesus, who lived a celibate life, Muhammad was married. Furthermore, after the death of Khadija (his first wife) in 619 CE until the time of his death in 632 CE, Muhammad married a total of 11 more wives. Muslims, however, are not alarmed by his numerous marriages, since they know the following: 1) that it was not unusual for a powerful Middle Eastern chieftan to marry a number of wives, and 2) that almost all of these 11 other wives were widows when he married them, and 3) for the most part these marriages were contracted in order to cement political ties with the tribes of the wives. Source: Hadith and the Prophet Muhamma
You can read about the Prophet Muhammad's marriages and wives from here, here and here.
Why did Prophet Muhammad (pbuh) marry young Aisha Siddiqa (r.a.)? Find out here.