Photoshop or any other open source software?

So,what do you guys prefer? Most of the users go for photoshop, and they claim that it is really easy to use and it has way more features than other open source software. Still, I don't think it's true. All the open source software offers the same ffeatures and quality. I don't really guarantee the interface though. It might not seem that easy.

Anyway, what do you guys prefer? Do you prefer photoshop or open source software to design something and why?