A good question I've never thought of..
I have many aquaintances at DA that use huge programs to do their artwork and they suggest I use them to, but I can't do squat and what little bit I do, MSPaint and Irfanview can take care of..
I use irfanview to crop/resize images, sharpen/blur, convert, and downgrade color quality (16 color bootskins, wee!) and I use MSPaint to edit imperfections in the artwork. No need for Photoshop here, not yet anyways.
So, how many of you actually have a large program with all the bells and whistles but only use it to resize images, crop images, or just use it to convert images? and who actually uses all the bells in whistles in the program if they "must" have it? Who uses various tiny programs that do what they need done and that's it?