Vegetarianism is something that I could never do. Abstaining from eating meat would just ruin my life haha.
I could take meat or leave it. I eat vegetarian when I feel like it. 
I could probably abstain from eating some seafood, but red meat and poultry? No way.
I'd agree with that. I don't really like seafood much. Unless it's lobster, I do like lobster.
Vegetarianism
Vegetarianism is the practice of abstaining from the consumption of meat (red meat, poultry, seafood, and the flesh of any other animal), and may also include abstention from by-products of animals processed for food.
Vegetarianism may be adopted for various reasons. Many people object to eating meat out of respect for sentient life. Such ethical motivations have been codified under various religious beliefs, as well as animal rights advocacy. Other motivations for vegetarianism are health-related, political, environmental, cultural,
. According to the Christian Vegetarian Association, Paul was not referring to vegetarianism, which was not an issue in those times, but to the practice of not eating meat from the meat market because of fear that (like the above issue involving Daniel) it were sacrificed to an idol. "Wherefore, if meat ["brōma", Strong's #1033, 'anything used as food'] make my brother to offend, I will eat no flesh while the world standeth, lest I make my brother to offend