Would you pay someone to be your friend ?

That's not a friend, that's an employee.

Honestly, most friendships are really just two people trying to get something from one another. This would be a more honest way of going about the same thing. Armus approves this post.

This happens a lot in Tokyo. :'(

I have paid people to crew on a boat with me and most often we become good friends (but I keep paying them). It's a rather intimate lifestyle, living in a space possibly as large as a small living room.
It either breeds friendship or not; there's little room for middle ground.

Nope. It would be a waste of money.

That depends. All the time? Or am I like bringing them along to help me beat somebody up?

No, but if someone offered me money and said would you be my friend for the day - I'm down.
Easy money.

You must be a friendly person to provide intimate services well. What's a little money between friends?

No, it would be sad thing.

No.