When I was in college, I worked at a liquor store in a sketchy area.
We sold lots of single cigarettes and airplane size shooter liquor bottles to people, many of whom would come in multiple times a day to make those same purchases over and over. It would've been far cheaper to save up and buy a full pack of cigarettes and a pint of liquor, but they never wanted to commit to that level of saving/spending.
I wonder how many of those people went on to become Strava Monthly subscribers?