I guess I appreciate the terrain in there for free riding when weather sucks. Sure, the structured training workouts I can toss on there from TP are nice. But being able to free ride for 2.5 hours indoors and not want to punch drywall out of boredom is great.
Also, learning to "world hack" has made me happier. Much fewer people in the world, so your bike speed is much more realistic without the crazy drafting. Also, tends to be fewer obvious cheats roaming around flying at 50mph. More peaceful.
Just put the code into the text doc of the world you want, and voila. Mostly empty France. Or one up everyone and go fully solo and get started then turn off the wifi. No weirdness. Just you.
As for group events, I only really do group rides with the group of folks I know and have a Facebook group with. That makes that more enjoyable. We have Discord channel going usually.