I like the way this thread began. Let's return to that.
I've got experience with Stencyl Free, Construct 2 Personal Edition, Clickteam Fusion 2.5 Personal Edition, Game Maker Studio Professional, GameSalad, and (the very underrated) Game Develop. They all have their advantages and weak points. That said, C2 has become my go-to engine for most purposes because I find that the things I want to do which I cannot do are few and far between, and the things I want to do and can do are very easy to figure out without resorting to a tutorial. In the other engines, if I want to try something new, that usually means looking things up and spending a great deal of time working out the theory behind it, but C2, it's all very intuitive for me, personally. Add that to the fact that C2 definitely receives the most meaningful and frequent updates and has one of the more helpful communities, and you've got a winner.
I actually take notice when someone rants about why they like their engine better than another though. Despite those posts often being misguided and sometimes just very biased and wrong, it's fascinating to see what people consider to be the strong points of an engine. For example, I generally shy away from GameSalad, but when I find people who still swear by it, I can't help but wonder what they see that I don't. I'd really love to hear what other people think about C2's strengths when compared to other engines, and its weaknesses, too.
People like to say lack of direct scripting is a weakness for C2, but those are all people who don't use C2. If they did, they'd know about plugins, custom behaviors, etc.