Why a glass dome?

[Cuddletauren]

It's very beautiful, which is weird in itself. Triangles are stronger than a hemisphere. Initially I figured these guys didn't know about hostile creatures, and settled these mining domes with aesthetics in mind, but then I see all the advanced defense capabilities and it's clear the domes were designed from the start to protect the keepers from the hostile natives. So whoever built these domes knew about the extreme surface danger. The domes are fortresses, and were designed that way, but what is the reason?

It's best to hide this base underground, but we ignore that, because it doesn't make a good game. It's best to have that computer and big grinder sub-surface, but it makes for a game. I'm not looking to criticize, I'm looking for creative answers (or the correct one, if it exists) as to why we need to expose ourselves with these domes.

Dome keepers are alien invaders setting up the stage for a genocide. I just assumed I wasn't doing evil because I was a humanoid and the natives were angry looking blobs, but if I evaluate this without familiarity-bias, everything makes sense. The domes are purposely there to provoke creatures to come get murdered. The domes are not all triangle-based reflecting "the guild's" status as a non-professional military without many protocols--similar to many terrorist organizations of the real-world.

So I guess what I'm getting at is, "are domes glass because the player is a terrorist?"

Thank you for the privilege of your time.

[René - Bippinbits]

Are triangles really stronger than a hemisphere though? In my understanding, a sphere is the strongest shape in that setup, most resistant to pressure - which is why any high pressure gas tanks are basically spheres. I'm not sure about it though.
Then you got two domes who do feature triangles, and two which are spherical. It might be production related, in the sense that different manufacturers prefer or specialize to certain shapes.
The material is not necessarily the same as our glass. It might be a very sturdy transparent material - Dome Keeper is set in a future, so i think different materials make sense.
As for why it is see through, there can be multiple reasons. For one, we are on a month long solo expedition, so not being confined to a room but getting an open space feeling might help keep us sane. Secondly, a transparent material makes it easier to see all threats around the dome. Sure you could have monitors, but they might fail or shatter, so if a good transparent material is available, it seems like a good fit.