Wow. Either you are a new member or clearly just never took the time to review RCI and its resorts/process. I am flabergasted that you can say "Most, if not all, of the resorts you get to select are "all-inclusive" which require a fee per person per day." There are less than a handful of resorts in the United States associated with RCI that even offer all-inclusive options. Most of the all-inclusive resorts are in Mexico or the Dominican Republic.
And as far as not having any benefits at all-- Would you rather return to your home resort (the resort you purchased your timeshare from) at the same time every year? If so, then don't look into timeshare EXCHANGE, which is the main service RCI offers. There is a lot that goes into making these exchanges happen, including paying the employees, contractors, etc who are able to make all of this happen for YOU.
Also, RCI is very clear about the all-inclusive fees at each resort (because they vary by resort) BEFORE a member exchanges into them.
This is just the tip of the ice berg. I would suggest you attend a seminar at your home resort or even visit the RCI website for more information, added benefits, etc. Timeshares aren't for everyone. Do your research before purchasing (or bashing) anything.