Well consider this. Yes it is nice to drive America in your own RV seeing all the wonderful things there are to see in our great country. A good RV is going to cost new or used depending on variables like year, make, model condition upwards of $100,000. How much will you actually use it? Few times a year for say 10 years?
Now for the same $100,000 you could go on vacation a few times a year by flying to great locations in America as well as include a trip to Europe, South America or even Africa. Domestic 3-5 day vacations typically (excluding Hawaii) run $2,000 or less depending on airline, accommodations etc...
5-8 days in England, France, Germany Belgium and a few other European destinations run in the $10,000 range for a couple with accomodations, food, air and sometimes a great tour. You can even catch a Viking Cruise up one of the famous European rivers lasting 8-14 days with stops, tours, food (great food) airfare, transportation and first class cabin for $8-$12,000.
So if you are considering buying a $100,000-$350,000 or more RV, think about what you want to see/do and how often you can do it. RV ownership is not for everyone. Personally I like to travel America with an occasional trip over seas. Hope this helps. Enjoy life whatever you do!