Gamble for free? How are you going to gamble for free ?
Haha gambling for free, this is only applicable if you'll gamble with casino's play money.Gambling is risking your own money and if you are referring gamble for free as in faucet money thats not even a gamble. If you are not risking anything, thats bullshit for me. You only have very small chance to win but that is enough I think because it is gambling afterall isnt it
Faucet is one of it and this is what I've done before but giving this idea to the gamblers that wants to give up gambling, you'll encourage them instead of quitting. 
Nothing is free in this world as rightly being said. Even if you think you are getting it free their would be some condition apply scenario and thus you will fall in a trap and that free money will become the debt as you will play more to get more money and may end up in a losses .
a faucet is just a foretaste of what you are about to play. it is essential for any gambling sites to have it in place so that they can attract more players to play on their site. This is no different to advertising budgets they could have and yes it is totally free.
A faucet is a way on how to play gambling safely, for you to know what will happen if you are going to play gambling with your money. It is like a free trial, if you wanted to know how to play that game or how does gambling works, then use the free satoshi on the faucet, because it is more safer than to risk your own money without knowing how the game works.