Garak

Bashir and O'Brien did not just have what the official startrek.com website refers to as a "homosocial" relationship.

I think the writers did kind of start off with a bromance, and then the ~~slashfic writers~~ fans got a hold of it, and then this game of "chicken" ensued where the innuendo got more and more explicit.

There are many, many such moments: one comes from Field of Fire

O'BRIEN: The kid's a born helmsman. BASHIR: And so say all of us. ALL: Hear, hear. ILARIO: Thanks. I'm just glad to be here. O'BRIEN: It's the best posting in the galaxy. BASHIR: If there's anything you want, anything at all, just ask. ILARIO: Well, there is one thing. O'BRIEN: Name it. ILARIO: Next time you two go to the holosuite, I'd like to come along. O'BRIEN: Sorry. BASHIR: Can't be done. O'BRIEN: No, it's out of the question. BASHIR: It's impossible. KIRA: Don't take it personally. They're very serious about their leisure activities. BASHIR: It's a good way to relieve stress. O'BRIEN: Yeah, I highly recommend it. BASHIR: Just not with us. O'BRIEN: No. You know, when you have a holosuite visit, it's sort of a personal experience. BASHIR: He's very particular about anybody seeing him in his coonskin cap. You understand. ILARIO: I suppose. QUARK: Gentlemen, your holosuite is ready. BASHIR: Terrific. Now if there's anything else you need? O'BRIEN: Just let us know. (O'Brien and Bashir go up the stairs) ILARIO: Have you ever gone to the holosuite with them? KIRA: Me? Never. EZRI: I know when I'm not wanted.

The moment is even odder because we know from episodes like A Simple Investigation and Badda Bing Badda Bang that O'Brien and Bashir did go to the holosuites with others, including Jadzia Dax, for fun -- but when they went alone, together, they did not want anyone else to be there.

...But to me the real finishing piece is from Extreme Measures:

O'BRIEN: I should've left a note for Keiko to let her what we were planning. BASHIR: Why worry her? O'BRIEN: No, I want her and the kids to understand why I had to do this. BASHIR: She'll understand. She'll know you did it for me. O'BRIEN: That's what'll upset her the most. She always said I liked you more than I liked her. BASHIR: That's ridiculous. O'BRIEN: Right. Yeah. BASHIR: Well maybe you do, a bit more. O'BRIEN: What? Are you crazy? She's my wife. I love her. BASHIR: Of course you love her. She's your wife. O'BRIEN: Yeah. BASHIR: I'm just saying maybe you like me a bit more, that's all. O'BRIEN: I do not. BASHIR: You spend more time with me. O'BRIEN: We work together. BASHIR: We have more in common. O'BRIEN: Julian, you are starting to annoy me. BASHIR: Darts, racquetball, Vic's lounge, the Alamo. Need I go on? O'BRIEN: I love my wife. BASHIR: And I love Ezri. Passionately. O'BRIEN: You do? BASHIR: Yes. O'BRIEN: Have you told her? BASHIR: Not yet. But I will. O'BRIEN: Oh, yeah? When? BASHIR: When I'm ready. It's just that I like you a bit more. See? There, I've admitted it. O'BRIEN: Yeah, well, I love my wife.

The dialogue doesn't even really do it justice, I don't see how you can watch that scene and conclude something other than that they had a romantic relationship.

As a fan / supporter of the "Federation is post-capitalist" theory I actually found that moment a bit disturbing in context. Pelia is ancient and, although clearly eccentric, I think we're certainly meant to understand her as being a "wise woman," so for her to comment that the whole post-scarcity thing may just be a "fad" to me came across as questioning more than supporting, although maybe I'm just being a bit defensive.

Starfleet personnel are a subset of the total human population. Off the top of my head I'm not aware of any canon figure about what percentage of the human population is in Starfleet, or the total number of Starfleet, but presumably it is not a huge percentage of the total.

There are numerous notable civilian characters in Trek, but in general the franchise presents us with a vision where, contrary to the in-universe reality, civilian life is sort of at the periphery of Starfleet. Civilians are people that Starfleet personnel find to be colorful characters, sometimes become romantically involved with, people who serve Starfleet personnel when they're on vacation or otherwise at leisure, sometimes criminals, etc.

The notable civilian characters we see on screen tend to have their entire lives circumscribed by Starfleet -- think Jake Sisko or Keiko O'Brien.

I'd be really curious to see not just a human civilian character but a civilian world fully developed over the course of a series. What is it like to be "just some person" living their life?