Let me add and reply to a few comments.
I am all for cheap. I'm cheap. Bicycle vacations are usually cheap. I have taken many week long cross state bike rides where you pay $100 for them to haul your stuff and you sleep in a tent on the ground and buy your food along the way. $300 for the week is pretty easy. Cheap vacation. I could even make it cheaper by eating out of grocery stores instead of restaurants during the week. But it was a vacation from work where I earned money to afford vacations. Even though they were cheap vacations. Money, how little or much I spent on vacation, was not the concern. It was the vacation aspect. Being able to do a vacation cheaply added to its pleasure for me because I am cheap. In some things. So I am all for taking cheap vacations by bike. Its great.
Between college and starting to work, I traveled Europe via bike. Cheaply because I did not have much money. A few thousand dollars saved up after bike gear and flights were paid for. It was enough to not worry about money though. I wasn't too lavish. But I don't mind eating from grocery stores. I'm not too picky about food. I just want enough food. I stayed in hostels or pensiones each night. Fairly cheap and comfortable and safe. Stayed with friends I met along the way or knew before going over. Ate at restaurants some. Cheaper restaurants. Cleaned up after riding each day to stay healthy. Saw the sights of Rome, Florence, Pisa, Zurich, Munich, Amsterdam, etc. A great vacation. And maybe the last time I have 4 months off. I also had a full time job waiting for me at the end of summer so I was going to be employed soon. Now that I am in the working world, its hard to get away for long periods. Regrettably. So I understand taking the opportunity to take a long bike ride. You might not get many opportunities in life. But do it responsibly. Work to earn some money before hand. Get your life in order so you have something to come back to or do with your life afterwards.
Someone mentioned meeting a person who traveled via bike cheaply and thought that was great. Sounds great. The person said this person got jobs and saved up enough to travel all year. Sounds good for a portion of life. Not an entire life. But the person said they were a child when they met this bicyclist. Therefore I am pretty sure the child did not really understand what the bicyclist was doing. The bicyclist WORKED to SAVE up ENOUGH MONEY to travel via bicycle for a year, cheaply. The WORK and SAVE parts seem to not be understood. And I suspect this bicyclist also just stopped wherever they were when money ran out and got a job for awhile and saved money and then took off again. Maybe harder to do this today. But this bicyclist understood they needed money to travel via bicycle, even if living cheaply. Don't need much, but you need enough to not spend all of your time and effort worrying about it.
For the people who condone or advocate some of the less pleasant ideas originally presented. How would you like it if there were people sleeping in the alleys in your neighborhood? Or near your yards? Or in your yards? How about people going through your trash cans? How about people coming up and using your outside house water hydrants to bathe and wash and drink from? Or gong through your garden or fruit trees on your property to get food? Or people sleeping in your town's city parks where you go for evening walks with your family? I'm not talking about areas of city property out in the boonies miles from anyone or anything. I mean parks where the people of the town use all the time. The walking trails and bike trails that go by the elementary and junior high schools in my neighborhood for instance. If you are against people using your house and property and neighborhood for these actions, why suggest travelers to these things to other people's houses, businesses, property, towns?