Just before I stopped witnessing I was talking to a couple of elders in my Cong about how ineffective the witnessing work has become. Both these elders have a few young children like me.
I told them about the 5000+ hrs to get 1 convert. I explained that even if they spent two hours every weekend out witnessing, and did their family worship every week, they still would not get one covert based on these statistics, not even their children. If their children get baptized and remained witnesses they would be doing way better than this average.
Witnessing in western lands has become redundant. I love speaking to my witness family and friends about this. In Australia we have had a about a 2-3% increase in JWs in almost 20 years. The Mormons are almost 20%. Tell this to a JW and watch the cognitive dissonance kick in.