What is an advantage for me to choose Airbnb services all over the USA.

If you plan on traveling all over the U.S.- Airbnb might provide you with more of a Unique (They go beyond typical tours or classes by immersing guests in each host’s unique world) experience. Airbnb is usually much cheaper than a Hotel. If you are good with people Airbnb might be better than a Hotel but not as good as a Hostel. Airbnb should give you access to a kitchen (same with Hostels).

There is no good reason to use any one service or company, All have good and bads. Airbnb is not always cheaper than hotel and some have less than good results