I'm both a long distance wilderness traveller (a/k/a backpacker) who has hiked long trails like the 2,190-mile long Appalachian. Also a long distance train rider for 40 years. What do each have in common? Great adventures if you want, and adventure means being prepared for the unexpected sometimes, and adapting well enough to the conditions you find.
In my earlier train riding years, I listened attentively to stories told by the then-oldtimers working on Amtrak trains, as well as those riding them. Their experiences made me wish I had been born a couple decades earlier. In the Amtrak age I have experienced superb train trips not too different from what they relayed about an earlier time, and also just the opposite. When things haven't gone exactly as they might have, unless it was really inexcusable behavior by an employee causing an entire car or train to be miserable (in which case I documented everything for a complaint now or later), I just tried to go with the flow. (Like there was a choice?)
You know, when hiking for a week or more at a time carrying 30-40 lbs. all day, camping at a different location each night, lots of unexpected things happen. Some are fabulous--like a postcard-worthy sunset from a mountain viewpoint, or a tentsite near a babbling brook to lull you to sleep, or figuring out how to craft an almost-gourmet meal on a lightweight camp stove from a dwindling food supply in my pack and still having enough food to get me to the next town resupply. And sometimes it's drought conditions so water sources are few and far between, or rain five days in a row that washes out a footbridge so I have to ford a swolen stream that is up to my waist, or a rodent that chews a hole in my tent so it can see if there is any food inside he can steal. It's ALL part of the adventure, and in the end it's all worthwhile and makes for great conversation.
That's how I look at passenger train travel. One trip, every train arrives on time, the on board crew is polite and attentive, nothing breaks, and the food is great. Another trip, one train is so late that you miss a connection and that throws an entire trip in limbo; a toilet down the hall overflows; food is not well prepared, and your sleeper or coach attendant is rude and AWOL most of the time. But it's also an adventure, calamities are survivable, and you got to take the train! Guaranteed you will recount these tales--pro and con--many times in the years ahead with friends and family, and some of your audience will be envious that you got to experience it, while they didn't--even the bad stuff.
Sure, there is an obvious difference because you pay good money to ride trains, and once your gear and expendables are purchased hundreds or thousands of miles in the woods are nearly free. But your mindset to handle the good and the bad gets you through most of it with a smile before and after, and maybe during.