It's my favourite cartoon EVER. I'm biased, but take my word here: Final Space is everything you've been looking for if you're a Sci-Fi nerd and like watching cartoons. This show is packed full with lovable characters, an engaging plot, great soundtrack and killing, outstanding visuals. It's a work of love, and there's nothing quite like it. It's got its flaws, of course it does, but they've honestly never bothered me in the slightest, and I've enjoyed every episode so far.
The most positive aspect of Final Space that immediately comes to my mind is the way it treats its rating. You know the genre, seems like there's rules for making an adult oriented cartoon involving constant swearing, multiple sex jokes, not really an ambitious animation style, etc. And Final Space? Oh boy, swept me off my feet. Definitely give it a shot, I can't promise you'll love it because, to each their own, and lots of people find it difficult to overcome certain details, but hey! I love it, some friends of mine love it too, and it's worth a chance!