Honestly, not really any of it. My only real subscriptions (web hosting and domain name registration) are done on a yearly basis, and the one site with software

Honestly, not really any of it. My only real subscriptions (web hosting and domain name registration) are done on a yearly basis, and the one site with software I pay for is renewed on a 'when it's needed' basis (since the forum uses XenForo). Monthly subscriptions just feel stressful for me, as does the idea of paying for something on a recurring basis in general.