i'm a vegetarian, i'm abstaining from the consumption of meat
I'm a pescatarian.  Why did you decide on vegetarianism?  
i had health-related, religious and personal reasons. 
What kind of health issues does vegetarianism help with?
I was eating way too much greasy chicken and my blood pressure and cholesterol levels were high :(
Have you noticed a big difference since cutting out meat?
Definitely! My health got better and I feel better in general. I'm an ovo-lacto vegetarian and i consume both dairy and eggs
What kind of personal reasons would someone decide to be a vegetarian?
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,
meat-eating may be permitted depending on the sects. In Hinduism, vegetarianism is the ideal. Jains are strictly vegetarian and consumption of roots is not permitted.
Dietary choices.
Many people choose to forgo food from animal sources to varying degrees (e.g. flexitarianism, pescetarianism, vegetarianism, veganism) for health reasons, issues surrounding morality, or to reduce their personal impact on the environment, although some of the public assumptions about which diets have lower impacts are known to be incorrect. Raw foodism is another contemporary trend