DS, Are you really looking for a reason not to join or do you just not love your wife? I am just asking. I mean the church is pretty much like all others, except that we believe in family forever. Let's say you join the church, what do you think will happen? I have never heard, seen or other wise heard of any cermonies that would make you cut a toe off in order to show your loyalty. All they ask is you pray (talk out loud to God), read scriptures and make yourself a better person. They don't take your little girls and marry off to weirdos, They do teach them to help others and show them how to become a member of society that doesn't just take, but that gives and is unselfish.
If you look at the church from the out side circle, like what attracted you to your wife? What made you say hi for the first time? Was it that you knew she would say hi back? Or was it that she posessed a simple beauty that put you in awe. I sense that you have a true fear that you are either not worthy or do not want to fail. You never know whether you choose the right or wrong until after you have choosen. It is worth it in the end, but until you are done with the game you can not have the prize.
Hope you can find a peace that will allow you to understand the real truth. God Bless You.