Happiest people in the world? Far from it. Consider my own family. I have JW relatives who gave up everything, moved to where the need was greater and they have never been happy.
They've been constantly in poor health, suffered with depression and had feuds within their own JW family. They've done nothing but complain about everything in the congregation. Upsets, bickering, scandal, you name it.
So for all their decades of faithful, sacred service, are they truly happy? Content? They're as miserable as they ever were. And the only thing they have to look forward to is the new system.
Does anyone else have friends/relatives who gave up everything for the Kingdom and never found real happiness?