I'd certainly be surprised if I ever woke up from being cryopreserved. Which isn't to say that I'd object to the process if I had the disposable income and an understanding/cooperative family support structure, which I do not.
I wonder if it would be more popular if the cost was reduced to something similar to a regular funeral. It seems it might be a more cheery send off even if the chances of it working are questionable.
You can already buy an insurance plan that will pay for it in some states, and that's reasonably priced. In my case religious family members would never let it go down though even if the finances were solved.