Foods people eat

Why do people eat what they eat? Many people eat what they eat because their either allergic to certain things or they just dont like it. As you may know certain people are vegetarians which means they dont like meat or chicken basically they just dont eat meat at all. Some people just want to watch hat they eat and some people want to lose weight so they just eat salads or they want to watch what they eat. Me in particular only like to eat salads on certain occasions and i also like to watch what i eat. If my mom cooks food like friend chicken and stuff of that nature i would only eat it if im really hungry.