One of the biggest advantages of a motohome over a caravan is that you are not limited, and can do 70 on the motorway, and I do. I certainly don't hang about at 45 and it is unfair to characterize them in that way. I know Strolling Johnny's post was tongue in cheek, but there are many people who actually feel that way, and I see no point in perpetuating the myth.
Yes all high sided vehicles can be a handfull in a high wind, the answer is to slow down, not many people know that! You can also add airbags to the rear springs which reduces roll, and they should in fact be fitted as standard they improve handling so much.
I still like having my little home with me, and all the 'mod-cons' that it provides, it's still the best answer I have come up with so far for festivals etc.
I certainly would never even consider owning a caravan.
Giok