Yeah as a rule I cancel every service immediately after payment. If I still need it in the second month I'll just buy another month, it takes seconds and I don't need to track anything. (Only exception being a music subscription, the only thing I use on a daily permanent basis.)

I would much prefer if all services offered an option to buy only one period rather than always requiring manual deactivation - but I also understand they make a lot of money from people paying for things they aren't using.