You know what, I STILL get hit up for free or stupid cheap work 14 years later. Seems to be an issue our industry has to deal with. Whether you're just starting out or not, some people just don't see any value in design (but still realise they need it)... you just learn to avoid those people.
I have a mate who I help out from time to time... for free (I get some perks/contra). I let him art direct a bit, otherwise it just drags on and on. At the end of the last job he tells me 'that's the best one I've ever designed'
So older designers aren't immune to this shit either. I still get fckd regularly.