I just keep things seeding until I need more space, then I’ll remove things based on ratio, average upload per day, and how much I want to keep the torrent alive. For example Queen Charlotte ratio is at 81.12, I don’t really like it but since a lot of people want it I’m keeping it up. Alternatively for anime it’s mostly a ratio of 2-3 but because I know how few people actually seed anime I keep it up (doesn’t hurt that it’s only like 1 GiB per episode too). As for removals I’m probably gonna remove High On Life soon since it’s pretty heavy at 35.98 GiB and only has a ratio of 4.67 after 2 weeks.
Damn that mouse, I’d even be fine with life of the author in theory. But life of the author +70 freaking years is ridiculous.