I use both. I bought Affinity Suite to see if I could ditch Adobe; it is quite good, but unfortunately it can't fully compete, at least for my workflows. Talking about basic tools (not fancy AI stuff), Photoshop and Illustrator are without any doubt superior.

But lately I'm finding myself using Affinity more often for some pluses: it is fast, doesn't span useless and memory hungry precesses around, and doesn't try to connect everywhere. It also doesn't refuse to start if I have "only" 10 GB of free space.