That's the enthusiast kicking in, I.e. the randomness of their condition and operating rather that the comfort of the journey.True, but that said my memories of first gen DMUs were in their final rundown. Scruffy, chewing gum stuck in the seats and left in the old ash trays, a layer of dust and grime that puts most Sprinters to shame. But for all that they had character and the seats were comfy. I enjoyed travelling on them.
That's true, but after all, railways are there to get from A to B in the most effective way, not an adventure in railway operation. I agree that the journey really consists of the view, in relative comfort and safety. Little if any care about my safety, travelling at much higher speeds than in the '60s and with more chance of getting there clean and on time.*I don't enjoy travelling on any modern train, they just get me from A to B, preferably as quickly as possible. It's a lacklustre experience. The scenery from the window is the highlight.
* I am presuming that the recent parlous state of rail travel is excepted from this discussion, things were far different pre 2020.