So something like the London tube, where millionaires sit next to people that have been unemployed for the past 2 decades sounds like hell to them.
The biggest problem with DB is that they're privatized (but state-owned). They've been cutting large parts of the rail network off for good and instead invest in large infrastructure projects with dubious benefits (and then DB executives retire as executies in construction companies hired for these projects).
The rare case where you have to take a lot of luggage can always be covered by taxis. In no way is that more annoying than finding parking, sitting in traffic, taking your car to maintenance etc.
Also, it sounds like you're talking about long-distance services here. But this thread is about local to regional services where people don't generally carry around baggage.