YES. All vehicles, from a daily driver, to those on a show circuit benefit from regular scheduled detailing. Regular washing of your vehicle keeps contaminants from scratching your paint, but offers no protection from the sun's harmful UV rays. A proper detail should include a thorough cleaning of the vehicle and then the addition of protection for the various surfaces, such as plastic, leather, rubber and especially the vehicles painted surfaces. Maintaining the physical appearance of your vehicle will help retain the value when it comes time to sell it or trade it in.
Wax fills and hides scratches, but does not remove them. Unless the surface is properly prepared with the appropriate compounds or polishes, scratches will reappear as soon as the wax starts to fade.
Even in the hands of some professionals a high-speed buffer will often leave the tell tale "swirl marks". In the hands of an amateur a high speed buffer can be down right hazardous to your vehicle. Trim can be ripped off, headlights and taillights ruined and in worst case scenarios your vehicles paint system destroyed.