We can hardly find any similar organization that would impose so many rules and bans...
1) WTS can prohibit whatever they want. This is something other groups cannot achieve so easily - they need a conference or a council to meet, relatively large number of people should agree the change. This naturally leads to slow pace of changes and extravagant things are generally avoided. On the contrary WTS can set whatever rule 5 people (out of 7) agree upon. They proved in the past they literally destroy your life without any remorse. (ban on organ transplants, civil service, blood dogma, ...).
2) In other groups there is a variety of lifestyles you can follow. For example in the RCC there are charismatic groups, there are groups for families, there are catholic scholars, pilgrims, whatever... if you are an introvert you can meditate and look for solitude, if you are and an extrovert you can spend a lot of time with the people. You can join charity and help orphans. You have many things you can pursue and still your friends will consider you to be a good Catholic. The same applies for other denominations, but the WTS is different. Everybody is forced be an extrovert, going "from house to house", charity is discouraged, separate bible study groups de facto banned, constant guilt-trips, "do more" etc. At the end, many witnesses are mentally ill.
I do not see anything superior in the witness lifestyle. And as for morale, if you join a Christian group you will find other people trying to be morally clean (and sometimes failing in the same way as JW's are failing).