early adopter of pinegrow here. I even bought multiple licenses early on, just to support them. It's become a critical part of my work now. And it's pretty affordable. Any software isn't going to be worth it if you don't find use out of it or use something else. But I'd be quite unhappy if I didn't have pinegrow to work on UI at my current job. I love how easy it is to copy and delete objects and I build screens for stakeholders (and then devs to work on)
firebug / chrome dev tools are great, I still use them along side pinegrow, but they aren't pinegrow. And pinegrow doesn't do everything perfect. I will ocassionally open up the same files I'm working in pinegrow inside a code editor for more robust tools, BUT pinegrow has been excellent to work visually on some of the mindnumbing things I'd have to do in code if I didn't have it.
