Don't talk to strangers

Yea, this goes for us moms too. How many times do we tell our kids not to talk to strangers yet an unknown man (in a wheelchair and more than likely homeless) asks me a question, and I stop to see what he wants. Stupid! I was just outside Starbucks tonight, in clear view of the inside, and with other people outside so I didn't feel in danger or anything. This guy was going to ask me something and then stopped and said he's ask me when I was done inside. Huh? I don't know what he was going to ask, for money perhaps? When I left I had 2 drinks though and he had rolled a few feet away so I didn't stay to see. He had his *girlfriend* with him too. She asked me something about ice while I was in the store but with no teeth, it was hard to understand her. Do I look like a good person? Or a pushover? And why do I always stop?