Asshole Design

I don't see any downsides or arbitrariness of this suggestion, I mean, there are some services I will use for one month, and I intend to use it for that month, but it happened before where I would forget to cancel it, and this has happened to other users too, by default, auto-renew should be off, I don't really know any strong arguments that can go against this point, I mean, auto-renew can be useful, but there are many cases where it could be harmful and even though people do forget it, it might be a tiny bit deceptive in some cases.