What is always in front of you but can’t be seen?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

There is something which is always coming but never arrives?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

What can you catch but never throw?

The more it dries, the wetter it becomes. Can you tell what it is?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

I look at you, you look at me, I raise my right, you raise your left. What am I?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?