I am jumping into this a discussion a bit late, but I’ll put in my two cents.

If we are lucky and we do not blow ourselves up and if we are smart enough to face the challenges of nature, then we most likely will encounter other sentient beings.

As our sun dies, we will need to find new places to live.

Other sentient beings in our galaxy will also face the same challenge.

The densest region of a galaxy is in the core, which is the most likely place for new stars to be formed from the remains of older stars.

Thus, all sentient beings will eventually migrate to the cores of galaxies.
Snowflake.