@Ark79
Well this is a common misconception. Funnily enough, drinking urine dehydrates the body and does not rehydrate it. I am not digging all to deep into this, but just to have a brief look at the science behind this:
Urine contains components such as calcium, potassium, nitrogen and others. Those are excreted by our kidneys and bound in water (which together make your pee) - so drinking urine basically resubmits these harmful components to the body, adding even more to the balance.
An illustration: light yellow, "good" urine contains of about 95% water and 5% toxins, compounds and such. Drinking a glass of that - even though it is not advisable - will not kill you. But if we do assume that any time one needs to pee some 5% of toxic molecules are added, after one glass that makes 10%, then 15%, and so on. This is why many field guides are listing urine next to blood and seawater.
With the rule of thumb that man can survive about 3 days without water in combination with the issue that the compounds mentioned above being triggers for vomiting or diarrhea (both dehydrating factors), one is on the losing end.
There are differing opinions, indeed. Yet studies have also shown that between 1 1/2 to 2 glasses of urine already contain enough harmful contaminants to cause health issues. So for me, that just makes a risk without any benefit. Sorry Bear.