It is very flexible, and has lots of features both free and small cost, developed around the world. However I am not convinced it is what I want. To develop quick sites I believe this can be done much easier with Weebly or Google Sites. To develop more sophisticated sites then I prefer to use native HTML5, CSS3, PHP and Jquery.
When developing more complicated sites I often find that you are trying all types of tricks to manipulate the CMS tool to do what you want, and you may just as well build it yourself. I also prefer to understand what my site does and not just understand the output.
So for the near future I will continue to use mainly HTML5 etc and Weebly.