Maybe MB helps others, but MB does little to help me. This is not about SEX, this is about sexual fulfilment which is WAY beyond just sex. We tend to put too much focus on just the orgasam. In good sex, sex is about EVERYTHING. Most importantly, sex is communication between two people. It is an incredible mind game. What I am trying to say is that most of the important aspects of sex can NOT be experienced when going solo. It is the WHY you have sex that is truly important, not the HOW you have sex. In true passionate sex, it is a deeply emotional experience, it is crucial to well being, and it can not be acheived in any other way. In effect, there is no substitute for it.