why do some people ask for money when they do not seem to need it?

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I have been wondering about that for sometime. Not long ago come to our humble home a woman asking money for her and her family to make ends meet till the end of the month, she told us she will pay us. She did not look like she needed it but I thought what if she did? So I helped her but regret it soon, I pay attention to the poodle dog and it look well groomed, I end up hoping tho that because she took the effort of going door to door that maybe she really need it the money and that will be the last time I saw her, Wrong Today I met her again next to a shopping center that I often go to. I spotted the dog first and this time the dog looked different, like it barely was groomed and then she talked to me about helping her to make ends meet, till the end of the week now. I told her I remember you and no, I don't have the money. She lost interest in me but after shopping for a couple of posters I had to take a second look at the dog, even I could tell that the dog went through at least 30 dollars of grooming in a short while. So, what's your opinion, why people who do not seem to need the money ask for a hand out?