Other suggestions, apologies if I skimmed over them from above.
Lot of people have a lot of fun with Lady Blackbird. It constantly gets good reviews, though I've never participated in it myself.
http://www.onesevendesign.com/ladyblackbird/
I have run a Ghost Echo game on RPOL here a long time ago. I like this one and you kind of get to make it whatever you want: sci-fi, weird horror, techno babble, any combo. It's also incredibly small.
http://www.onesevendesign.com/ghostecho/
People give RIFTS and Palladium a bad rap, but I've always had an affinity for it. RIFTS is a big bag of anything, but the system is a little... well, that's what a lot of people have a problem with. However you might find you like it. I homebrewed the hell out of it to remove crunch and streamline a lot of decisions. It can be very rich if you only include the parts that make sense for your game. AND if you do like the system, then there are a couple of secondary products from Palladium to look at: Manhunter, and Nightbane.
Also, there is a certain amount of charm to be found in the DnD Red Box set if you can get ahold of one. Which then might lead you to something along the lines of
https://en.wikipedia.org/wiki/King%27s_Festival. I might be mis-remembering, but I thought that WOTC had released some of these things for free in pdf format. B11 King's Festival is a good straightforward Fantasy adventure, where you gear up, go in, watch for traps, and rescue the victim.
Also, finally, You may want to not be the DM, but find someone who can DM just the two of you so that you can have a shared experience playing the game instead of potentially running as adversaries. The GM-Less suggestion above is good but if you're not into it, I find often that sitting on the other side of the table (so to speak) can take away from the "let's play a game together" that you want and turn it into "competition". Having someone be the potential adversary allows you to be the team you want to be and still enjoy the game. There are plenty of GMs out there who don't have a problem crafting a game for others and being as much or as little of an adversary as you want. Seeing the example you gave of someone throwing around RL slurs is not a shining example of a good GM (or maybe even person). GMs run the full gamut of garbage and paragons just like the rest of the human race.