IMO lots of people are "touchy" about this issue not because you're saving yourself the pain of going to your local art webpage to browse for hours and download any picture for private non profitable leisure but for other reasons stated above.
I think sir Ravingdork negative experiences derive for the main problem that has been a hot toppic for months now, in this case might be sympathizers of original art creators.
Some folks, specially art creators of any kind, now live in true fear because of programs made by other people with no ill intention at all. But as you all know, responsibility lies not on the tool but the hand that holds it.
It's not the first time that we've seen bad people hurting others with tools made by good folks.