as somebody who has trainhopped (in the usa) let me clear up a few things, in most places it is illegal to jump on a freight train and ride it, and in some places you simply will not be safe attempting this. i have been shot at by "bulls" aka the security in train yards, and i have heard stories of people who have been killed this way. another serious concern is that these trains may not stop for 20+ hours (they have multiple drivers on board) and there is no guarantee that you will have things like shade, so you could be in the sun the entire time. if you dont have enough food and water you may have trouble getting of the train, and falling asleep on a moving train is a serious hazard. this isnt to say that this cant be done with some relative saftey and ease, but you shouldbe extremely cautious and be aware of the risks before you attempt anything like this.
on a more lighthearted note yea i have been really wanting to hitchhike again like what the hell am i doing right now just looking for a job when i could be having adventure? i still worry about a few things but like gosh girl you dream about this litteraly every night, well sometimes they are nightmares, but those are rare nowdays :)