Meh, i have had vegan BBQs and nobody has ever gone home hungry, besides, veggies are not the only things you can grill as a vegan.
Know a skeptic? Send him/her to my house, i will cook those preconceived ideas about veganism right out of their systems.

a more apropiate name for such a fellow would be Seth Mac(boring old)Fart.
disclaimer : i am NOT kidding.

MEDICAL NEWS: “BARBECUED MEAT LINKED TO BLADDER CANCER, ESTROGEN IN MEN”
“Meat, especially cooked at high temperatures, (such as Meat cooked during Barbeques) has now been found to generate heterocyclic amines that can cause cancer,” so show the results of a study at The University of Texas Anderson Cancer Center and confirmed at the American Association for Cancer Research 101st Annual Meeting 2010

PHYS-ORG NEWS: “Studies have identified a number of compounds in meat that might account for the association between Meat and Cancer. These include heterocyclic amines, polycyclic aromatic hydrocarbons, and N-nitroso compounds.” -PHYSORG. BBQ’d MEAT, and pieces of beef, pork, chicken, etc, when put on a barbeque, especially when grilled to produce the desirable highly coveted diagonal ‘grill marks’ on the meat or sausages, produces Heterocyclic amines, which act like effeminizing estrogen when eaten by a man. Note that this applies to all Meat, whether grassfed, organic, wild game, deer, or factory farmed. All meat, found to contain heterocyclic amines when cooked, has now been linked to bladder cancer, pancreatic cancer, colon cancer, rectal cancer, breast cancer, stomach cancer, and ball cancer.

SCIENCE NEWS: “Troubling Meat Estrogen” – “Researchers find that a chemical that forms in meat, especially charred portions, is a potent mimic of estrogen, the primary female sex hormone.” “There’s no way to tell visually, by taste, or by smell whether PhIP and its toxic kin lace cooked meat” It took just trace quantities of the heterocyclic amine to spur prolactin production. “Heterocyclic Amine and PhIP was incredibly potent,” he says, able to trigger progesterone (female menstrual hormone) production at concentrations in a man comparable to what might be found circulating in the blood of people who had eaten a couple of burgers.” -Imperial College of London.

Note that plants do not produce heterocyclic amines no matter how they are cooked. Thus, Vegans and Vegetarians do not have this problem.

Men who barbecue and/or eat cooked meat, even when there are no visible traces of cook marks, can become less masculine, and begin to develop effeminate characteristics such as gynecomastia (flabby “man-boobs”), paunch stomachs, wide effeminate hips, low potency, and less-masculine bodies.