Jehovahs Witnesses have no reason to be happy.
One of the reasons I left was due to the overwhelmingly negaitive outlook of everyone that was my friend at the time. It's like they are addicted to misery. I began to see that this was how my non-jw family viewed me. As a really downbeat, negative person.
4 years later, I have had to stop my small children from attending the meetings because one of my kids (7) went on a rant about all sorts of stuff that simply shouldn't be on anyones mind, never mind a 7 year old. I'm hoping that I have saved her mental outlook from being damaged in years to come.
The Good news? Pffft. You can shove it right up your arse!