Why do we love hobbies more than work?

In what things work is different to a hobby?

All idiots over there will insist in "Money, of course." Maybe that is the general answer. Maybe I need to be more specific in order to get a different answer...

For some reason, things you thought were interesting and funny, when you do them as a job, they stop being so, and that quality i want to check out.

Now, Love is not like it was at the beginning. It should be more intense, but it is getting weaker.

It seems I have lost a pearl in the ocean. I need that pearl to feel good, at least.