Thanks for the many replies. I didn't expect to generate such a healthy discussion. I only considered a road bike because so many members of various forums say they very quickly switched to a road bike and express their regret in buying a hybrid.
I will be sticking to mainly roads. But there are areas during my journey where the surface is patchy, but not quite a pothole..similar to the following pic
http://www.saddleworthnews.com/wp-content/uploads/2011/08/photo61.jpg
Do most road bikes handle this sort of surface well? Vickster mentioned decent tyres on a road bike should handle poor surface, what tyres are considered decent?
Also, I hear from friends that carbon fork on a road bike handles poor surfaces better? Is this correct? And would that be for road surfaces as shown in photo and maybe slightly worse?
I also hear carbon forks can't be repaired easily, so would an expensive carbon fork bike be suited for a relatively new commuter on dodgy roads who may have a few gentle falls, or does it take much more serious falls to cause serious irreparable damage to carbon forks?
Finally, can you come off a 4 inch kerb safely on a road or hybrid without suspension without causing damage to the bike?