[fdewrewrewf]

Training - eh, maybe. I ditched my Garmin and Strava, and have never been happier with my cycling. Some people seem to like the Zwift thing though.

"Ease of communication" - I now consider that a downside. I don't want to be distracted by the possibility of getting a notification at any second, with information of any level of severity.

"Develop profitable businesses" - yes, there is a lot of money to be made selling people shiny things.