What's the point of traveling to a new galaxy?

Admittedly, I've only read some things on the wiki about it, so I may not be entirely informed on this, but everything cool seems to be happening in Euclid, that's the most populated galaxy (for obvious reasons) and most people's builds happen there.

The point of the game is to make it to the center of the galaxy, which allows you to travel to another galaxy. And while I've heard that some types of galaxies harbor planets that are mostly extreme, you can find those in Euclid. Are there any galaxies that add new features that aren't available in Euclid? Why would I bother going to the center, only for all my equipment to break and for there not to be an easily accessible way back to my home based in Euclid? I mean, I think teleporters work but the planetary portal network that relies on glyphs only works to travel to other planets in the same galaxy.