Planet Fitness

I just joined and was a little put off that there were so many people here that had bad things to say about it.
Maybe it is just newbie ignorance, but isn't a gym just a gym? Does anyone have success stories?
In my mind, I think it is all about my attitude and willingness to do what needs to be done to shed my fluffy self. But then again, I have been fooling myself for the last year that I can make diet mods and walking work too :ohwell: