Johan, I don't think ccleaner is one of those "miracle utilities." When I was pretty new to computers I tried some of the those "miracle utilities" with the free trial which you then had to pay for after the trial period. And they messed up my computer big time. Then I tried ccleaner and never had a problem with it. Been using it for years now. I have not tried it on Windows 8 though. Probably should have mentioned that. I found it pretty intuitive to use.
I can certainly appreciate that you've used it for years without a problem. But I can also appreciate that I used to make a decent living fixing computers. And I cannot tell you how many times I'd be making a diagnosis on a machine that had the little ccleaner icon on the desktop. Often there would be a laundry list of strange things the machine was doing or not doing. I would always ask two questions. When did this or that strange behavior start and when did that ccleaner program get installed. Almost without fail, the answers would be along the lines of ccleaner was installed about a month an half ago and the weird issues started a little over a month ago.
Correlation isn't causation but I don't think anyone can blame me if I tend to see dollar signs when ccleaner gets mentioned as a solution. I made a lot of money working on machines which had that program installed. I don't think its a coincidence. And I don't think those machines would have turned into revenue for me regardless of whether or not they had used that little program. Because if that were the case I surely would have heard the strange problems showed up three months ago and ccleaner was installed three weeks ago. I don't think I ever heard that. It was always the machine had a little problem, ccleaner was installed, then the machine had big problems and then they called me. And then they paid me.
I'm sure it works great for some people like yourself. But I'm positive it makes money for a ton of computer techs.
And again, recommending anyone use that program or any other just to clear browser cookies? The risk to reward just isn't there for me when 5 minutes spent on google could teach anyone on the planet how to clear the cookies in any browser they might have with no addition software or risk exposure.