Even if you have the best pregnancy imaginable, being pregnant is no walk in the park. You're literally growing another human being inside your body, which is straight up wild conceptually, so it makes sense that many women feel eager to get the baby outta there.
The last trimester tends to be the least comfortable, since the stomach has reached full roundness and activities as simple as tying your shoes feel near impossible. So when the baby takes forever I would imagine it feels like the universe is mercilessly torturing you for something you did in a past life.
At least, that's how a lot of women on Twitter feel, and I don't blame them.