It is obvious that you do/say what you do/say because you want to. Why else would you? But to be asked why do you want to?

That is a question with no possible answer. Why does it occur to you? Where is that source that is neverending and always overflowing?

Why do things occur to you? Do you analyze that WHY or just get on with it?

How do know that what you think is the cause really is the cause?

I mean it can get very hairy and I don't know what the point of it is anyway do you?

If you know WHY something occurs to you do you really want to get in a debate about the reason for it having occurred to you? I mean seriously where is that destination leading? What difference does it make?