Good Riddles

Question: I support the fallen (ones) I restrain the naughty (ones) I replace the nonexistent (ones) What am I?

Question: If 1/2 of 5 is 3, then what is 1/3 of 10?

Question: John has been hired to paint the numbers 1 through 100 on 100 apartments.

How many times with he have to paint 8?

Question: I am a big threat to humanity,
but you wouldn't get rid of me even if you could.

What am I?

Question: You have lost your mother at the carnival. You search for her and eventually you see her.

What's the first thing you do when you see her?