People have been vegetarians since at least the time of ancient Greece and India, probably much longer. 
Really i didnt know that, i once tried to be a vegan for couple of days, but i could not escape from meat :D are you a vegetarian? 
Me? No, i would rater eat cat food than be a vegetablarian, and cat food is supposed to be made just for cats.
ahha, funny :D you should try it just for a couple of days, i did because of health, but im young so i dont need to be a vegetarian :D
A person can be a vegetarian at any stage of life, many people simply object to eating animals, such as the Hindu people in India.