I think I do, actually. Heck, even when we go to my parents house we stay in a motel and I have to reserve a room several months in advance in order to find a budget oriented room.
I think the internet has everyone planning ahead. It's next to impossible to just get in the car and go. When I've done that, I've regretted it. We've had to drive to multiple hotels looking for openings, ended up in smoking rooms, etc.
Although I did the obsessive planning (and was glad I did!) when we went to WDW, I could probably have a great trip just making hotel reservations and going. When I go someplace else, where the entertainment isn't all laid right out in front of me, I find I really have to research options ahead of time or we get there and all look at each other like "what do we do now?"
Every trip we take, I keep a file folder. I work out driving distances, make a list of things to do and places we might want to eat at each place we stop, make hotel reservations,etc. It's not as detailed as I did for Disney, but it's actually more work IMO. Planning the Disney stuff was recreational for me and didn't seem like work.