As its said "moderation in all things", I have to say that maybe both sides of the great pubic hair debate are right.
I have shaved off my pubes for the last 10+ years, and I have absolutely no complaints at all. Back in the days when I used to shave them off twice a year, I initially loved the smoothness, but later (at the 10th day point) totally regretted shaving!!! It does take the skin time to get accustomed to frequent shaving, and now if I don't shave my pubes every 6 days, I feel "dirty".
Now, for those who feel that the pubes serve some purpose, I have to say that in the times that I was "full bushed", that eventhough my pubes were clean (I wash with soap and water), that they had an "after smell". trimming never helped either, and thats what prompted me to shave them all off. Now no smell.
Some years ago at work, a couple of women complained that they had re-occurring yeast infections. When these women were asked of their 'pubic preference", they mentioned that they are full bushed. Now, if the purpose of pubes is to trap bacteria, then wouldn't it stand to reason that these "bacteria traps" are harboring the fungus that's contributing to the yeast infection?
We can not pin point which cultural groups have the higest or lowest incidents of gential problems--solelty based of pube design, as there are other factors to consider. We all can't be all right or all wrong. To each his own, and so is the choice of what we feel is right to do about our pubes.
Hope this helps.