I like Strava. It's fun for me. When it stops being fun, I'll quit. I also don't like having a computer on my bike: checking my time, distance, and speed on Strava when I get home is kind of a treat, especially after a long ride. I find the analysis helpful for finding things to work on in order to go faster - though I don't care about going fast on every ride.

One of my riding friends recently quit Strava. I support the decision, but it kind of sucks having to text kudos after the ride