I saw a talk once by a guy on how he spent his late teens/early twenties train-hopping around North America. The main point he wanted the audience to take away

I saw a talk once by a guy on how he spent his late teens/early twenties train-hopping around North America. The main point he wanted the audience to take away was Don't Do It - it's dangerous (stories of a few dead or disabled friends), uncomfortable, can have serious legal consequences, and (most importantly to him) the more rich tourists do it, the harder it gets for the desperate teenage runaways like himself, and others with zero resources, who are using it to survive.