This is the first time I have had a look at anything related to the witnesses in almost 12 months since my marriage broke up and will also probably be my last, as I look on all 28 years of being a witness as a complete waste of my life and it is still influencing my decisions today which bugs me even more than anything else. I will never join any religious group ever again as I do not want to ever be controlled in the way I was by the witnesses. In answer to the orginal posters questions:
>> Do you know any couples that were miserable together?
Yes, have seen many, most couples in my experience hide there unhappiness. I would not say my own was miserable but there were very long unhappy periods.
>>Or maybe just not married to the right person?
I definately married the wrong person and know of others that did the same. Most of those marriages did not last.
>>Yet they stay together anyway because it was a "grave sin against Jehovah's arrangement"
Dead right, and I stuck with it for 28years. Ended when my ex-wife decided she could not live with a disfellowshipped person (never happened anyway). I know of many who stay together today out of fear including marriages of elders and there wives