The life biggest questions

At some nights when i can't fall asleep it make me think! And it always end up with strange questions!
Here are some of them!:

Why are there people there thinks it’s great to play Tennis?

If a person doesn’t dare to eat a worm, is it then okay to call him a chicken?

Why does earring smell like navel?

Why doesn’t people get, that you should let people come out, before you go in?

If you mix coffee and chamomile-tea in straight measures, are you then just so tired/fresh as before you drank it?

Why are there still people there stand in the middle at the escalator, and stop the traffic?

Why are there people there thinks it nice to have a fireplace inside, we invented the radiator, because it was smarter, than open fire?

When will we all stick together and kick out the estate agents, it would solve the house situation. (They fill up a bit place)