Solve these Mysteries

Question 1
A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis:
The Wife said she was sleeping.
The Cook was cooking breakfast.
The Gardener was picking vegetables.
The Maid was getting the mail.
The Butler was cleaning the closet.
The police instantly arrested the murderer. Who did it and how did they know?

Question 2
A man walks into his bathroom and shoots himself right between the eyes using a real gun with real bullets. He walks out alive, with no blood anywhere. And no, he didn't miss and he wasn't Superman or any other caped crusader.
How did he do this?

Question 3
If you touch me, you will die, but you can only live without me. I am a big part of your life, and will eventually be the only thing left. You will learn to embrace me finally and rest.
What am I?

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ANSWERS:

1. It was the Maid. She said she was getting the mail...There is no mail on Sunday!
2. He shot his reflection in the bathroom mirror.
3. Death