Even if JW's wouldn't change the world in a bad way...the only thing they're focussed on is bad things, not love. The average Talk is build up like this:
Talking about how bad this world is regarding.... (fill in the blank)
How JW should NOT be so bad
How we can prevent oureselves for becoming such bad persons.
It's 45 minutes focussing on the things we DON'T want.
Now I understand why my husband (and a lot of others in my cong.) get really depressed in KH...and they don't ever realise what's the cause!!!
So, in the minds of JW's are a lot of unwanted things. Maybe that explains why there is so much mental illness among them. And that is sad enough.