Gimp was actually a big part of what made me give Linux a shot.
I always used cracked Photoshop/Illustrator, but the move to Creative Cloud made me try Gimp. I liked it and wanted to know what the name meant, and saw it was GNU which I heard of as part of Linux.
But most of the 2D graphics I make now are with Inkscape. I couldn't live without Inkscape. There's a learning curve, but once you get it you love it.