I justify the use of Adobe for professional use cases, like "I have to print a label with a specific set of colors and GIMP has bad CYMK support".
If you have to put a signature where there isn't one or stuff like that, GIMP is more than good for the job and in the meanwhile you're helping a community project to grow.
I'll always choose the FOSS option first, but if you want something that does most of what the Adobe products do, has decent CMYK support, and doesn't charge a subscription, the Affinity software suite (Affinity Photo, Designer and Publisher) is pretty good value.