Being a Vegetarian or non vegetarian is purely based on the individual preference. No one got the right to influence another in this case. If you don't like to eat specific meat you can stay away from it. But it is not good to look another person in a bad way who eat the meat which you do not. And here i am not talking about which is healthy or unhealthy.

Are u a vegetarian or non vegetarian? what would be your answer. I have seen many people who answer "yes i am vegetarian, i eat only egg & fish". I don't know what to say for those people. 

All the creatures on this earth rather universe are same. Fish/chicken/cow/goat or whatever the animal,when dying all might feel the same pain. Since fish is small it doesn't mean fish will get less pain when dying. what sort of logic is this.

Some countries they used to eat rat,cockroaches, snake, etc. Since i am not used to eat those stuffs i cant say those are disgusting or i hate the people who eat those. May be they feel the same for chicken, fish, etc.

As i said earlier it totally based on individual wish or perception. If you don't like stay away. But please do not try to control another person's habit. 

I am a non vegetarian and to be honest sometimes i feel bad for eating non veg. That sometime is not the time when i eat (lol) . When i eat i forget all & i used to eat. other times only feel bad. But i don't think i can ever be a vegetarian because i hardly prefer vegetarian dishes :)