I don't know about you but I myself think about it all the time (well, not all the time but at least 10 times a day)

Obviously. All we think about is sex 85% of the time

As always, it's a case by case basis, but I would definitely agree with the fact that guys are thirstier. Many girls never really develop a strong sex drive or it takes them a really long time, while almost every guy does by age 13.