I can appreciate the leaps that smart devices have made, but the novelty of doing certain things on them is short lived for me. The experience of typing on phones and tablets is so so inferior - for experiences like forums, or any time I need to do serious posting anywhere, I turn to a computer.
I prefer media experiences like videos on high DPI, high resolution devices too. Web design, photoshopping, blender etc. - are all things I can't do (well) on my phone. My phone is basically a link to social media and messaging, games, banking, utilities etc. For anything more substantial I need a device more substantial.