Question: What would happen if the sun were to be replaced with a black hole of the same mass?
Answer 1. (EXPECTATION) Oh no. Everything would get sucked up and be spaghettified and a black hole would consume the whole solar system. We would die.
Answer 2. (REALITY) Everything would orbit the black hole like it orbits the sun. That’s pretty much it. We would die, for a different reason- no sun=no light=no heat=no energy= no life=no humans=no you. The Earth would still orbit the black hole as if nothing happened because the black hole and the sun have the same mass.