Though they are people too, I treat them horribly.
Some says something like "Hey man, spare any change?" and my reply could be 'change is good. Maybe you need a change in careers, get another job perhaps?!'
Or often they'll hit me up as I walk into a place, and I ignore them. Then they hit me up again on my way out, and I say "I ignored you the first time for a reason. I didn't give you money then, and I'm not giving it to you now either" as I continue walking.
I hate people who beg, period. Every day they have the same choice as I do, as I roll out of bed. I can go to work or not and earn my pay. I make the choice most of do, or have to. They don't. So why should I let them take the money I earn when they take the easy way out?
I don't. As Ronaldo says, "Simple as that."