That's absolutely true Susie -you ladies do have the advantage.
But it isn't something which we men should mourn. Instead we should take delight and pride in helping our ladies to more orgasms.
We usually do have a refractory period but in my younger days I found that in continued pleasuring of the lady, without the urgency of my need to orgasm, there was a very pleasant result in that I could cum again after a little while - but you're right that it's younger men who most often experience this.
From Wikipedia:-
In sexuality, the refractory period usually describes the recovery phase after orgasm during which it is physiologically impossible for a man to have additional orgasms. Though generally reported that women do not experience a refractory period and thus can experience an additional orgasm, or multiple orgasms, soon after the first, some sources state that both men and women experience a refractory period because women may also experience a period after orgasm in which further sexual stimulation does not produce excitement.
While the refractory period varies widely among individuals, ranging from minutes to days, most men cannot maintain or achieve an erection during this time, and many perceive a psychological feeling of "satiation" and are temporarily uninterested in further sexual activity; the penis may be hypersensitive and further sexual stimulation may even feel painful during this time frame.
Incidentally, relating to the Wikipedia reference that women maybe experience a refractory period too, I have often found this to be the case after what I and others describe as a 'whole body orgasm'. They describe it as being sated and continued stimulation has no effect, though thankfully it rarely seems to be for long.
I have also found that where there is no 'whole body orgasm', that continued stimulation can be annoying or even painful for the lady. That is a sign that, whilst a woman thinks she has orgasmed, she hasn't really because she probably caused stimulation to be terminated because the feelings were too acute and she feared she might lose control. It can be very difficult for a woman to let go 'all the way' - but once she has experienced the difference of a whole body orgasm she will never fail to experience one again. I explore this in my blog at 'Cumming - ready or not', dated 16.08.2011. It's a fair way down in that blog page but read it all anyway!