One aspect of this story that doesn't act as a justification for your commitment phobia: researchers saw no correlation between sexual satisfaction and living together or being married. Also, in an interview with The Telegraph, the author of the study, Claudia Schmiedeberg, said that children didn't play a role in the lack of satisfying sexy time either. So, the findings shouldn't be used as an excuse to get out of the whole having kids thing. In fact, this study shouldn't be used as concrete evidence for anything yet, since researchers noted that "further research is required," to really get to the bottom of why this trend exists.
Don't swear off long-term relationships just yet. They don't all turn you into Al Bundy. But if they do -- hey, at least you'll have an arsenal of one-liners.