Bring me another sandwich! Homeless and nursing

I have been a nurse for a hot minute and work in a community hospital that serves those in the lower socioeconomic bracket, homeless, drug addicts, prisoners, etc. I love my job and I love being a nurse, but the one patient demographic that seems to test me is the homeless. Don't get me wrong, some are the most wonderful individuals and grateful for care, however, more often than not, they are the most ungrateful group of people - demanding, entitled, and rude. They care more about getting a free meal or snack than an antibiotic or needed medication. They are constantly on the call light and seem quite irritable if they do not get their way. Has anyone else experienced this????