I have read that many people find the process of planning a trip almost as enjoyable as the trip itself. I think back about my trips and I can understand the thinking.
I have ridden coach all around the country and found it comfortable enough when there was an empty seat next to me. It is best if train schedules allow for an occasional overnight stay before continuing the next morning but that might be difficult with current Amtrak schedules.
While I have always felt safe I have also witnessed some criminal behavior on Amtrak. Once an intoxicated man removed for tearing up the dining room. A man sexually harassing a young woman travelling alone, which resulted in the conductor threatening to remove the offender.
People have a bit of trouble getting away with this kind of behavior as Amtrak is federal property and can call on assistance from federal agents if necessary, somewhat like air marshals on a flight, I guess.
As far as DIY self defense, I found these items on the Amtrak website. I have no idea if or how they are enforced.
But this is the official policy.
https://www.amtrak.com/terms-and-conditions.html#baggageInformation-specialAndProhibitedItems
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Corrosive or dangerous chemicals or materials
Including, but not limited to, liquid bleach,
tear gas, radioactive and harmful bacteriological materials.
- Carry-On: Not allowed
- Checked: Not allowed
Martial-arts and self-defense items
Including but not limited to billy clubs, nightsticks, and nunchuks.
- Carry-On: Not allowed
- Checked: Not allowed