I have used Photoshop for so many years I had no desire to learn anything new... last week I got Affinity. I already like it better than Photoshop. It does more than I will ever need, and after a short learning curve, it is easy to use. The only learning curve is just that it is not exactly the same as PS interface (because it is easier).
For more complex and detailed editing I use Photoshop. For easier, basic and fast editing I use RealWorld Paint. It loads almost instantly and it's easy to use plus it's free. I know there's Gimp but I found RealWorld before I I heard of Gimp and just got used to using it.