Answer:
I drift forever with the current and flows to your everyday life. I make living easy but I am good at killing people too.
I make you weak at the worst of all times. I keep you safe, I keep you fine. I make your hands sweat and your heart grow cold. I visit the weak, but seldom the bold. What am I?
I bring light to a dark world. In a current I travel and through tunnels I am hurled. Touch me and I'll kill you. What am I?
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
I can be cracked, made, told, and played. What am I?
What never gets any wetter no matter how hard it rains?