Cancelling is easy, I cancel as soon as I pay online, then manually resign up when I want it again so I don’t have to worry about direct debits. It’s ok to find something to watch and works on lots of platforms – smart TV, PS3, Xbox, set top boxes(appletv, WDTV live, Roku etc), smartfones, Tablets.
Downsides would be that most stuff is really old and can be downloaded for free online