why do fat people like fast foods?

You have it backwards. It's not that fat people like fast food. It's that people who like fast food get fat.

not just fat people

it's cheap, easy and tastes good

those fat people used to be skinny people that liked fast food...their fatness is the result of too much fast food

it is not that *overweight people* like fast food, but it is that they consume unhealthy food so their body gains unnecessary fat due to the food they eat. And almost all people enjoy fast food but their metabolism isn't as fast as others. It is an option to choose what you eat but you have no say over the size your body wants to stay. You can always implement healthier habits and you body will handle itself and even out.

same reasons everyone else who eats it loves it.
lots of skinny people eat fast food too so the relationship to being overweight automaticly if a person likes fast foods or cookies or any other foods is bogus. it's how many calories a person eats vs how many they burn during the day that makes them fat or not. not the food itself

Fast food makes people fat as it's full of sugar and addictive.

It tastes good? Duh

Not just fat people - all people tend to like fast food becuase its cheap and tastes good

It tastes good.

because they are greasy