Road to Serfdom is some of the most simplistic empty bilge I've read, bordering on unreadable. I guess it's pushing 35 years ago I read it, while I was still a keen supporter of the mainstream right, after an enthusiastic loan from a fellow Thatcherite friend. In reading it I found it so absurdly weak and obviously hollow that it started me questioning all "known facts" and "common sense" of my politics. That was the point that started my search for a range of economic and political viewpoints, reading deeper, and moved me away from Thatcherism to the centre ground!
The writing style was terrible, as every third sentence seems to close with something like "and this inevitably leads to socialism and serfdom, and eliminates freedom". Only a dozen or so pages in and I was thoroughly sick of this device, as it's becoming clear that's his main and just about only argument -- extreme repetition.
It's a short article padded to a book length rant that anything less than total laissez-faire market libertarianism leads to slavery, serfdom, social democracy, socialism, nazism or communism (He appears to understand no difference between any of these). That any tiny government plan, regulation or service must lead to totalitarianism and blackshirts.
So my memory is also of finding it hilarious, I suspect for very different reasons. I also remember being left completely baffled as to why it ever got to be popular. :)