I just put some heavy cream in my brown sugar oatmeal
That sounds interesting. What made you want to mix heavy cream into brown sugar oatmeal?
I like to eat unhealthy and delicious food in the morning.
A healthy diet is low in fat and sugar because they increase your chances of getting diseases later in life.  If you want to live a happy and healthy life, you should cut out sugar and fat as much as possible, even if they taste delicious.  If you are able to do this, your body will respond and you should start to feel better.
What's so bad about fat and sugar. It's tasty and if I don't eat it in the morning, I'm not happy.
While fats and sugars do taste good, they have a negative affect on our health when consumed in excess. It's important  to consider how your health might be affected by eating too much fat and sugar on a daily basis.