What Am I Riddles

Question: When you don't have enough of me, you feel a kind of gloom. But when you are using me, it is time that you consume. What am I?

Question: People are scared of me but I am loved by some. I can be your best friend but could become your enemy in a blink of an eye. What am I?

Question: Drop me and the world will shatter,
and you can always find me where you empty your bladder.

What am I?

Question: Voiceless it cries,
Wingless flutters,
Toothless bites,
Mouthless mutters.

What is it?

Question: I don't like crackers and I don't drink tea. I just want to eat what I used to be.