If I picked up a gal in a bar , restaurant or where ever it might be, since I don't know this person at all, I would use protection. I am just not going to take that chance. For me to go without protection, I would have to know the gal really really well before I would go without protection. At this stage in game with all the STD's you can get, I am just not going to risk it.
The other disease people over look and do not think about is Hepatitis C. Its transmitted from one person to another by blood but their is the possibility of transmission by body fluids. It usually asymptomatic. There is a cure for now, but many years ago, there was no cure.
http://www.msn.com/en-us/money/marke...b7Kz&ocid=iehp