You may not see the point, but Ipersonally do. I prefer to see my route on my phone but use the metrics from my watch, since it will include heart rate. So I sync both to Strava and delete the recording taken from my phone after. Sometimes the watch doesn't sync well, or I forget to start recording on one or the other, so it also gives me a backup.
OP said it was nearly a Strava replacement, so I was just trying to see how close we're talking. I'm always on the lookout for a better mousetrap.