We have both an onboard and portable inverter generator, in either case both can be started remotely, and are used predominately to power high current items such as AC and convection microwave.
We purchased our rig to enjoy all the amenities it provides and having a generator allows us to do so when not tethered to a power pedestal. We simply love being 100% fully self contained.
Since our preferred method of RVing is boondocking and dry camping, along with sufficient solar and 12 volt stored reserves, our generators guarantee success even during extreme weather scenarios.
On most occasions our genny gets minimal usage, converting to LEDs and using energy conserving electronics minimizes consumption, our solar array restores nearly all consumed amphours with few exceptions.
Although when circumstances dictate, having the ability to press a single button from within our RV and have our rig fully capable as if connected to shore power makes wherever we go just like being at home.