Owning and using any RV is a time and money consuming hobby whether you DIY or take your RV to a competent RV service often and pay them to maintain your house battery/charging system and fix/replace any plumbing/electrical/etc. problem that comes up. Also DIY or pay someone wash and wax the outside and take it to a mechanic for periodic oil and filter changes, brake and cooling system service, etc. You must keep track of tire condition and date codes and have tires replaced at 5 or 6 year intervals.
RV ownership and maintenance is not really comparable to owning a car or SUV, more like owning, operating and maintaining a cabin cruiser boat or an airplane. Some seem to enjoy DIY maintenance as much as camping and touring.