I never eat anything without cheese
What is your reason for only eating foods that have cheese in them?
From day one, I disliked any food with out cheese on it.
I like cheese too!  However, it's unhealthy to have a diet that only consists predominantly of one thing.  You should try diversifying your interests a bit!
I'm never going to change it
Eating too much of one thing is bad simply because you are not diversifying your nutrient profile. If you only eat cheese, you are only getting the nutrients that come from cheese. As a human, there are many more nutrients that we need in order to thrive day to day.