Oh don't be so dramatic. I'm referring to the immediate emotional connection. Its that which is unhealthy, not the sex. People who do this are often bunny boiler/stalkers.
I agree with all your points. Yes, there isn't that strong an emotional connection 2,3 months with another person. But, that time does give one a chance to decide *for oneself* whether there is enough connection and interest for sex. The more obvious red flags will have also have been raised by then. There is just no way to determine this from a few dates, assuming it goes that far. Frankly, I wouldn't want to deal with having early sex with some man that *I* decide I'm not interested in and then I have to figure out how to let him go. Lots of guys get attached to women too once they've had sex, especially if they like their other qualities.
Guess I'm just on the more cautious side of things.