For me it's about the journey of creating. So I like to be able to take things to pieces and rearrange them to my liking. I like to be able to play with the meshes in ZBrush and the textures in Photoshop(very old versions as I don't do subscriptions for programs)

That said I could see using it in the capacity that I would use something like Filter Forge but for me it would never be more than that.

I have no problem with others doing so as long as they clearly mark it has been used and what for.