Comment by pclowes

In most major European cities I have been in the airport to train connection is pretty subpar unless traveling light.

There is typically no integration of the airport baggage handling with the train baggage handling. So you need to move everything with carts that you can't take on the train.

An international trip to Europe for a longer duration is also a significant trip and not something you want to "one bag". Add in jet lag, multiple young kids, car seats, stroller etc. and it quickly becomes easy to see why the train is cumbersome for the initial airport to lodging connection.