Time doesn't work that way.
Information is not what it seems.
And emotions, all of them, are stored forever in the universe.

Then, on black holes. Every force that we have worked with is a push-pull force. So, what on earth are we thinking, when we thought up black holes?

Further, Vera Rubins has shown that everything swirls around the center of a galaxy at the same speed. Same revs/cycle.

Add these together, and we see that gravity doesn't hold the galaxy together. And thus, a super dense gravity well has no place in a logical stance about how the galaxy operates.