This is an interesting thread. As a brand new RVer, hoping to head to Mexico for 6 weeks, perhaps I can shed some light on what the new RVer is thinking. While you were going down to Mexico every year, I was traveling around a variety of other countries. I no longer want to go to other countries because traveling by air is a nightmare. It costs a fortune to travel now and stay in decent hotels and eat in restaurants. I traveled all my life for work and the appeal is long gone. Last year I was in Greece and I was so disappointed by the bad food, Grafitti on the sites, rude Greeks who could care less for customer service. Never again. I was in Greece 20 years ago and it wasn't the same Greece.
This is rather long winded but my point is that EVERYWHERE in the world has changed. Everything is more expensive, travel is more dangerous, bureaucracy is more onerous.
Mexico is still an inexpensive place to travel to relative to other countries. The good thing about RVing is sleeping in your own bed, being able to pick up and leave when you want, carrying all your junk with you and not having to lug everything around. For those of us who will be experiencing Mexico by RV for the first time, it will all be good.
I am sure Mexico was amazing in the earlier years but everything is more expensive now. I live in Canada so I am used to expensive gas.
To be honest, I am just happy not to have to get on a plane to travel. I have seen Mexico lite at the resorts but also the real thing, Mexico City and Guadalajara. The Mexicans are wonderful people and that is what I hope to see.