Thats a good point. On the other hand: Why reinvent the wheel? I have seen people code things from "zero", who worked hard for entire months, only to end up developing a product that under-performs. In this age and time, videogames have grown very complex, so any help you can get while developing is pretty much welcome, in my opinion. Many of these tools, paid or otherwise, also include images and musics, so it takes the stress out of having to find an artist and a musician just to get started.