8 is a very real and valid argument for a lot of people. They might work in an environment that's not as open to change like that. Whereas those of us who design and code everything ourselves, Sketch is a real option.
True, theres some thoughts about it here though. https://news.layervault.com/stories/1972-ask-dn-how-to-submit-a-sketch-to-a-dev
I, for one, love using Photoshop. You love Sketch and create good work with it. I don't see what the debate is.
In this case, there isn't. But remember that lots of designers spent their time complaining about Adobe, don't like using Photoshop and want an alternative. And Sketch is by far the best there is.
Don't give in to the trolls.
Well, it seemed the right thing to do. Cheers man.