Agreed, it is absolutely my favourite way to travel, especially long distance. Air travel is such a hassle comparatively.
Something about the way trains rock puts me right to sleep too, and I struggle to sleep in a bed normally.
I’ve never traveled on those fancy(ish) long distance trains, but even on the AD graffitied light rails in my city with their bland interiors and iffy seats, I’m still put at ease and feel wistful when I’m able to take them from one end to the other.