Something random for a Saturday night

I waste so much time on the internet.

Oh well... 

Some questions, I'd be interested to know what people think:

1. Does everyone lose passion for things when they get tired because of work or is it just part of growing up?
2. Is it easier for guys and girls to talk as friends when one or both are in a relationship?
3. Why does it cost more (sometimes) to fly directly in and out of a location, than to have an additional stopover on the way?
4. Why is it so hard to get motivated/organised to hang out with people on the weekend?
5. How does a real "rest day" work in real life?

Have fun with the answers.