We use the Present Simple to talk about:

1. General time (action verbs)
Example -
A. I live in New York.
B. The Moon goes round the Earth.

2. situations now (stative verbs)
Example -
A.I want a coffee.
B. That sounds interesting.

3. general time and situations now (verb be)
Example -
A.I am not fat.
B. Why are you so beautiful?