You have some good replies here, but I’ll add one piece. You’ve imagined a world where your primary characters are Good. No killing, just defensive armaments, all about diplomacy and exploration.
Consider, though, that interesting stories have conflict. Conflict needs to have consequences to the characters you’re following, or it’s not very interesting.
You’re describing a world that would probably be better to live in than that of Star Trek. But I’m not sure it would result in better stories.
You have some good comments here, but I’ll add one wrinkle: gas giants nearly invariably have lots of hydrogen. Add in enough oxygen (20% or so) for humans to breathe and you have a very flammable mixture.
I don’t think a mixed hydrogen / oxygen atmosphere could naturally exist.
But there would be an altitude where the pressure stays around 1 earth atmosphere. As long as the temperature and radiation situation was okay, you could get away with no special gear apart from an oxygen supply.
(Except that humans breathe out most of the oxygen we breathe in. Which would create little flammable pockets of hydrogen-oxygen mixtures every time someone exhales.)
crime
“People I don’t know walking in a public space”
All the funny chemistry jokes argon
To be fair, Bulgaria sort of got strongly encouraged to join the Warsaw pact by the red army
I am once again begging people not to post a headline that starts with “Trump, 79,” that doesn’t end with. Well. You know.