What I have learned from 13 years with the same woman is different. What you say makes sense, and having comparable social and educational background are certainly going to make things simpler.
But above everything, your partner and you need to have compatable sexual drive and desire, compatable ethics, and be willing to communicate and ability to listen to critique. If the relationship lack any of those, it will not last, or it will be one sided.
You can find this outside of "comparable social background and education level", I certainly know many couples that have been married for more than 20 years that don't fit this, and I know even more that meets this criteria that are seperated.
But above everything, your partner and you need to have compatable sexual drive and desire, compatable ethics, and be willing to communicate and ability to listen to critique. If the relationship lack any of those, it will not last, or it will be one sided.
You can find this outside of "comparable social background and education level", I certainly know many couples that have been married for more than 20 years that don't fit this, and I know even more that meets this criteria that are seperated.