Definitely finish watching it. The season finale is pretty satisfying and there aren't really any cliffhangers (thankfully).I hope they find another home for it. I won't give up hope till it's cancelled and even then maybe not. We did get a Veronica Mars movie, books and now new series after all. I'll be on board for whatever the creators do next.
And BTW, the co-creator of the ODAAT also made Men of a Certain Age which was an underappreciated and heartfelt series with some of the same DNA of ODAAT in terms of the small everyday sorts of stories it told.
I still have three episodes left in S3 of ODAAT. I'm really sad about this. It's one of my favorite shows in years.
It would be amazing if this show was picked up somewhere else (it would be amazing if CBS got it) but it would be the first Netflix show to do so and I just don't see that happening.