When to throw in the towel on an older motorhome

Fuel pumps can be replaced with an external pump at 1/10th the cost if you do the (easy) work yourself. Coach-Net roadside assistance policy would have saved you over $200 on the tow.

Maybe spend a few weeks tinkering by yourself on the rig. Return here for advice as needed. Maybe you'll grow to like it after all. That would also increase the value so you won't lose so much if you do decide to sell this coming spring.