Precisely most of people here started with faucet, at first time of dealing with faucet i thought i can earn some money there but after a long run i realized that i was wrong but the good part faucets abducted me to enter the world of bitcoin. In simpliest faucets are like promotions the same in gambling in the field of casinos thay are giving out some mbtc just to let users to try out their services.
Yup, most people start with faucets, graduate to signature campaigns, and then finally start treating bitcoins as money.
As long as it increases adoption, I think they are a help to Bitcoin.