There are happy and unhappy people everywhere. Many JWs have unhappy lives due to issues of diverse nature and find solace in the meetings and their brethren and their hope. However, many lead "good, clean, christian" lives and yet feel miserable and depressed, and they don't even stop to consider the negative impact that their religion is having in their lives. The mere thought of that is enough to make them feel guilty, and they supress those thoughts. Elders will also make sure that the religion won't be blamed for any problems whatsoever, because "Jehovah knows what's best for us".
Eden