I never said there weren't those kinds of people out there. I'm familiar with them. I've spent time in the offices of social workers, and done a term's worth of work with the sociology director at my university as part of my health studies education. I've talked to a number of people on various social benefits.
Hell, I'm actually on food stamps right now, because I've got a few terms left on my degree and the money I get left over from financial aid and supplemental income I get training and doing oil changes and brake jobs for my friends doesn't quite cut it on a month to month basis. That very program helps me feed myself. I also do a bit of vegetable gardening when it's seasonable to feed myself. But, food stamps helps me put food in my mouth.
What I am saying, is that every single experience I have had and every bit of research I have done write ups on (which now belong to Portland State University, I don't have them with me ATM) shows that social benefits is a fluid situation, that the vast majority of people on food stamps, TANF, etc. don't stay on it (although there is quite a bit of relapse after periods of up to a few years) and that people by and large don't want to be on social benefits forever.
Are there welfare queens out there? Yes. Are there people who game the system? Absolutely. Do those situations represent anything close to a majority of people on social benefits? Not even close, and I can provide any sort of empirical evidence you like that shows that is in fact the case.
PS, since you're in social work, the Dr. whom I did some work for has some excellent books on the subject. Look up Karen Seccombe on Amazon.