Difficult what am I riddles with simple answers

I am always will be coming, but I will never come. What Am I?

I weigh almost nothing. I am lighter than air. But even the strongest man in the world cannot lift me. What Am I?

I am taken from a mine, and shut up in a wooden case from which I’m never released, and yet I am used by many. What am I?

I have 4 eyes, but I cannot see! What Am I?

I move very slowly at an imperceptible rate, although I take my time, I am never late. I accompany life, and survive past demise, I am viewed with esteem in many women's eyes. What am I?

The thunder comes before the lightning; the lightning comes before the clouds. The rain dries everything it touches. What am I?

I have four legs but no tail. Usually I am heard only at night. What am I?

I am a mother and a father, but have never given birth. I'm rarely still, but I never wander. What am I?

I had no father, only a grandfather. I shall bear no sons, only daughters. What am I?

Although I may have eyes, I cannot see. I have a round brown face with lots of acne. What am I?