I don't think so.
To me, the vast majority of JWs become Witnesses because they desire everlasting life. They want to live in paradise. They love feeling special. They might go thru the motions but in reality, they don't show real diligence to reach people with their "life saving message". Once a person is converted, they are pretty much on their own. The "love" isn't all that real, especially if you express a difference of opinion. If you get sick or become elderly, forget it! Expect a life of depression.
Honestly, i think that most Jehovah's Witnesses care about themselves more than anyone else. Their self-sacrifcing love is not readily apparent.
Unhappy people cannot produce happy people. Self centered persons will never really care about anything except their own interests.