A dinner just isn’t dinner without that piece of chicken, beef or pork at the center of everything else on the plate. Ignoring the primal cravings of hundreds of thousands of years of our omnivorous ancestors’ history seems to be easier said than done.
One somewhat surprising reason that some(about a third) vegans and vegetarians gave for returning to meat was declining health. Could it be that after so long a history between humanity and meat consumption there may actually be something in meat that we need or instinctively want? About four fifths of the people who try to go off meat and then fall off the wagon apparently think so.