Private, your analogy is not quite correct, true, there are some servers wich you should avoid trying to rp on, but once you find a decent servers with admins around to monitor it and keep it from going to hell rp'ing in gmod can be the most fun you've ever had.
Gil, there are a few rp maps around for gmod, the one most commonly found right now is RP_Downtown_v2 ( when i started a few years ago when garry's mod was free it was Rp_hometown_1999

) and inside that map are locations such as empty stores, lots of appartments a police station to keep those who break the server rules from running around, and stuff like that basicly. You can make yourself the owner of any door in the map (except for the police station) and make anything you want with it, be it a store or just an appartment your character lives in.
You can also select jobs by pressing f4 on the server and selecting one presented there, or type /job yourjob and be whatever you'd like.
There's the ammount of posibility that i find facinating about gmod's rp, it's so much different than any other rp i've ever played, there are no quests, no missions you have to accomplish, just do what you want, form a mob, steal stuff, live like a normal person, and everything beyond.
Of course i can understand there are many people that think "why play a game like that?" when you present them with this information and of course this isn't for everyone, but if you are interested in a non-violent rp (doesnt have to be non violent though, shoot everyone if you'd like, but that isn't very rp'ish now is it

, but you have the option to, that's what is great about it ) where you can just talk to people, play someone that does things that you'd never do in real life, have an appartment, do stuff really

, This is most definitivelly for you.
in Austrlia, there is a really red sun, u got a red sun in sky too?