What is Good Sex and What is Bad Sex? Clinically speaking, the difference between good sex and bad sex is in the end result and what is behind the sex. Sex is never about sex. Repeat. If sex is causing problems, preoccupations, and damages your life, or rather that the sex has consequences, consider it bad, if the sex is giving you pleasure, good! If you have considered seeing a professional about compulsion or sexual practices, my doors are open www.julialmft.com