Good points have been made but you can't deny that CC is unreliable and, well, dead. If it were less buggy and its output actually ran on most machines (dozens of posts on this) it'd have more of a fighting chance, but that is not the case. I don't see how anyone can spend so long on a CC project knowing all the risks, with not a soul to do anything about them. And what if you absolutely need a new feature? There's been *one* update since C2, right?
If you've already spent years with it and know your way around all the quirks and bugs, chances are you can get something decent going. But even then it's stuck on windows..You can't expect new users to go through all that, especially since CC is not as actively discussed anymore.
Now, on the flip side, the one real advantage I see in CC is that it allows more "traditional" development. You can set up an .exe packaged with external resources, read/write to disk, build and utilize all of your own tools, etc. It was more versatile and familiar in this regard and honestly makes it very tempting to go back. I feel there was certain way I made my games & tools in CC and C2 ripped that right out from under my feet and tossed me Node Webkit (2 years later & courtesy of a 3rd party) & Project Files instead - vastly inferior alternatives afaic. The only way I've gotten so far with them is using project folder "tricks" not covered in the manual.
That said, sorry but I'm with Bartosh on this 100%. C2 was all about this fantastic modular exporter system and now we have, what, over a dozen half-baked 3rd party HTML5 exporters? I love everything else about C2 but when I've got team members hounding me about the possibility of reaching anything outside of a Chrome browser window I tend to regret sticking around. I have witnessed Scirra and their software grow and improve over the years so I firmly believe that things well "get there" one day, but man am I getting tired of waiting on HTML5.