Gravitation is a "weak" force of attraction. Charge attraction is so much stronger that gravity doesn't get involved in Quantum Electron Dynamics describing atoms. The forces pulling the nucleus together are vastly stronger than charge attraction holding molecules together. That black holes can be "a hugh mass into a confined space" requires an explanation, I think. Why? The reason is other separating forces or motions that are stronger have been quieted. The weak force of gravity allowing mass to consumate its attraction has occurred.