If you mostly camp with hookups or just do weekends, you most likely do not need the additional cost and weight of the generator. If boon docking for more than 3 days at a time, you will need some source of battery charging. This can be achieved by having a heavy charge wire off your tow vehicle, solar panels or a portable generator.
We like the built in convenience of a generator and our current one is LPG which does not have the problem of deteriorating gasoline sitting inside. If we stop somewhere en route, it is easy to push a button and heat something in the microwave verses pulling out a portable model, attaching it, heating your food, letting the generator cool down and stowing it.
The cheaper high capacity generators do not have good power regulation and may burn up sensitive electronics or motors. You may want to check yours for voltage and frequency regulation when loads change. I'm guessing that model may also be generating a modified sine wave that may be hard on induction motors.