[pjmlp]

No, you have to run like crazy hoping not to lose the connection train, being stopped in the middle of nowhere without any information, stuffed into wagons without air conditioning and possibility to open the windows, cramped with more passengers than available seats, without any place to stuff luggage, out of order toilets,....

[tgsovlerkhgsel]

You get the same issue with connections whether you fly or take the train (I strongly avoid non-direct routes for this reason).

None of my train trips in Europe (Scandinavia, Germany, Switzerland) had the issues you mentioned.

In particular, the designers of the German ICEs seem to have realized over the past ~decade that people don't want to lift heavy bags overhead (especially if the compartment is too small), and that when the only other space to store them is the corridor, the corridor will be full of bags. They added dedicated luggage racks with enough space to actually fit your luggage.

[bravura]

Okay so fly to CDG in Paris and then enjoy the annoying train ride into Paris that takes an hour and leaves infrequently. How do you get to and from the airport anyway?

Many cities it’s a nightmare to get to the airport, whereas the train station is usually central.

[Sharlin]

None of those is somehow intrinsic to train travel, as I’m sure you’re aware. Quality of service is just a function of priorities.

[cranekam]

The train from Zurich to Paris is a TGV with included (mandatory?) seat reservations, air conditioning and plenty of bag space.

[pjmlp]

TGV is the exception.

German trains pack as much people as possible and occasionally you can consider yourself lucky if you manage to reach your seat, if the wagon is still available to start with.