Even the one who are earning good, it is not possible for them spare money from their job and business and invest in bitcoins. If anyone think faucet amount is too low , they could join any bounty etc and do some skill to get some satoshi.
When i came to know about bitcoins, the first thing i did was faucets from FreeBitco.in and that was my first satoshi. I kept on doing a lot of faucets in the beginning. Many of those faucet site have ended or i have forgot about them, but i still have my account FreeBitco.in and i do login it sometimes and it takes me in the sweet memories of the past.
For those who are new in bitcoins and no extra money to buy bitcoins, faucets are blessing for them.