I would say that travelling on a super low budget (or no budget at all) can be a transforming experience. It forces you to interact with locals to obtain any kind of food and shelters, and to live their lifestyle (because you can't afford anything more comfortable). On the other hand, I don't see much value in travelling where every discomfort can be removed by just opening up your wallet. It's nice but no essentially no different than going to the mall and movies in your town.