90% of the “factory farming problem” is stuff made up by PETA and similar organizations to outrage people and rake in cash. Another 9% or so are badly mismanaged animal ag operations. read more
As explained above, we cannot humanely raise nine billion animals. Going vegan is the only solution. Also, keep in mind that some meat, eggs and dairy products are misleadingly marketed as "humane" but offer only marginal improvements over traditional factory farming. read more