Some good advise and experience given. In addition it is helpful to be handy and mechanically inclined when owning an RV. It is a real problem to rely on other to do repair work for you. Insurance is helpful, but expensive in comparison and has it own hassles to deal with.
RVing is exciting and enjoyable, but has its problems and sometimes inconveniences that get magnified when a person is not able to cope or deal with them. Many RV manufacturers and dealers do not design, engineer or build RV to be as road worthy as they should be and therefore problems can easily happen. Not trying to be negative but realistic.
Renting a summer home or hotel travel is comparable to owning and maintaining an RV. The RV main advantage is freedom.