The problem for most is not the understanding of the concept. Its do I want or need this in my life. She may eventually "get it " intellectually but have no desire to become some fraction of time and focus. She may not need the added complexity and emotional drama.....whats the up side for her? ...common answer is a happier you ... Well.... how easy could you be replaced for someone on the same relationship page that will have a lot less emotional drama?
By the way ...your English is great ...probably better than mine