>Space Opera
There you go. While I like some realism or aspects of realism, Space Opera is generally, well, a fucking opera. It's elevated, it's not generally hard sci-fi, where these things are more common.
>Servitors running menial tasks
I mean, it can delegate a lot, but you often have to entirely revamp society to work a different way in that case, and a lot of sci-fi draws from our time or ideas of how things work, or are even a form of commentary. It is, however, often present in support or smaller roles, rather than full automation, which an argument can be made for.
>Including military
One, soldier as a story or character archetype is way too valuable, explorable, and exploitable to give up in many cases. This is especially true since a good chunk of even (Or especially) hard sci-fi relates to war and how technology affects it, and us through it. Meanwhile, there's also the matter of scale; sometimes you can't fund it, sometimes you follow rebels against robotic militaries, whatever. Sometimes it isn't as interesting or insightful to just go "it's all drones lol," especially since that thinking has only come incredibly recently, in the scheme of things. That's also before you get to the fact that the way man wages war vs. how machines would is a very interesting theme to look at.
As long as man exists, men will kill and go to war; there's more than enough men for it.
>Transhumanism, AI, singularity
Depends on the setting. It's often there, softly, or is just not the setting to examine it in. Especially the more extreme bits there. However, it is popular more and more with time, and in pretty much everything outside classic space opera stuff.
>Is it just to reenact Age of Sail stories except in space?
Yeah, pretty much. There's a reason we love space pirates.
Star Wars at least does the first; 90% of shit is droids, and the whole automaton army was a major thing in the prequels.
Your image is weeb trash with poor perspective. Hips where?