so my girlfriend bought herself a camper last week to do just this.
she got herself into a meh situation: she moved back home from PA, bought herself a huge old house at a steal of a price, and then agreed with her sister & brother in law to let them fix up the upstairs and buy the house from her.
in the mean time, shed live there, and then when they were ready to move in shed basically rent a room from them...because she wanted a camper to travel around in. she has a job where she can work from *anywhere* as long as she has internet access.
turns out, they moved in and acted like assholes, so she said "here, rent the whole place and ill sell it when you are ready, im gonna gtfo"
so she bought a camper from some friends, a wifi hotspot, and got the boss to trade her desktop for a laptop. her expenses will be lower, and she can go stay at a friends local, private lake most of the time, then a couple of other friends with big yards if she wants/needs to, and can go see her friends in PA, the nc mountains, or just wherever if she likes.
she bought the thing last week, so im interested to see how it works out, but for just her and her dog the 30' has plenty of room, and it'd be plenty if there were 2 adults there. i should mention that she was sort of a minimalist anyway (the huge house was a steal, and she didnt really use most of the room). she can comfortably have 3 - 5 people over to hang out inside for the evening.
and itll be cheap. she had the money to buy one used outright,but monthly itll be cheaper than the house/bills she had before. and with her job...well she can go out of town on the weekend and stay a week or two, then come home for a couple of weeks, then go somewhere else.
i guess you have to be prepared to...not want stuff. or kids. or multiple pets(She has one very, very well behaved dog). there is a pretty decent amount of storage in the things thats cleverly tucked away, but there is still only so much room. she wont be able to take all of her clothes with her, but will have the essentials and a little more and will get to take home with her any time she wants to travel.
she specifically bought a camper over an RV. she already had a truck (kinda had this in mind long term) that can tow the thing. itll be pushing the weight limit but itll handle it.