@ condoms
Their usage last as long as the woman can say "no" to unprotected sex. Hmmm, 2 -3 times?

@ STDS
I bet most Japanese can only name those that they've had. Men that is. Most women probably don't know they're infected for a while.

@ abortion
Yeah, it really is weird. Well, it's that or marriage. If you're a lady of the night that would severly cut into your income.

@ yoshiwara
Like most things in Japan, things change but the essence stays the same. Up here in Susukino the area survies as does well. I've heard that men wait up to an hour to get their soap bath ;)

@ Kabuki
Kabuki has it's foundations in women selling their wares on the edge of town. Although, the Tokugawa government prosecuted enough that Kabuki emerged.