I didn't say relationships are based on sex. Then one-night stand is a relationship which it is not. But sex is one of the most important things in a relationship. People don't really think of salt an important ingredient in the recipe and talk about fency stuff like basil, turmeric, coriander etc but without salt, it's not tasty. Eating chocolate decrease stress not eating it does not give stress (If you are not addicted to it, like cigarettes for me). I am not a chocolate fan so for me I can go on living without eating chocolate but I dont believe 99 percent of people will go on living without sex.