The Sarlacc is totally not a vagina.
Not a Vagina Edit
Seriously. The Sarlacc does not reflect any kind of weird sexual issues of anyone.
If you look at it and see a vagina, maybe that's your problem. Let's not even mention if you look at it and see a big toothy anus.
So the Sarlacc takes a thousand years to digest food. This was thought to be an extraordinatliy painful and torturous means of death by those who are unaware that people can't live for a thousand years, and their lifespan inside the sarlacc, while rough, would not be very long at all in the apparent absence of food and water.
Boba Fett was swallowed by a Sarlacc once, but then he escaped. This in no way symbolized a new birth, as he emerged from the sandy vagina of the world.