Double Toilets

Maybe like me, you clocked stories like this one about the mysterious side by side toilets at the Sochi Winter Olympics. Be very afraid, it has spread to the UK!

I was at a dance on the Cotswold village of Horsley and instead of happening in the Village Hall as usual it had moved across the road to the church. Lovely slippy wooden floor just right for those spinny French waltzes - but I digress, I visited the "the facilities" and discovered...

  

As I'm a gentleman, I used the one on the left. I still can't stop wondering WHY?