generally speaking the 100% safe investment does not exist , there is always a part of risk otherwise it wont be called an investement , it is same for bitcoin
Bitcoin is not save, but if you earn you bitcoin for doing signature campaign and faucets I think for me is safe at least is not wasting my time to just earning some and wait for increase so that I can sell in later.
Bitcoin is safe and it has safe future dude, So if you are earning by signature campaign then it's good, and I think you are wasting your time in faucets, rather invest the same time in signature campaigns as it will earn you more amount of bitcoins as compared to faucets, try to grow your bitcoins and hold it for future.
What if a person is not eligible yet to join signature campaign? Don't compare faucets to signature campaign because they are really different. It's like David and Goliath Chief.
And don't worry about newbie using faucets because they will grow up soon and will know others method to grow their bitcoin while advancing.