Great, it works for your use case. Not everyone does that, not everyone has the same requirements as you.

When i goto offices not setup for USBC and need to plug in power, monitor and ethernet?

At a conference and i want to do external display, power and my cellphone to charge it & tether?

With my 2015 i'll often (and easily) plug in 3-5 things at once when not at home (there i have a macmini)