Another question: if you're really really really excruciatingly honest with yourself about it, how good is that "buzz" anyway? Are you really getting a high off it, or is it possibly just an addiction based on the discomfort you experience when it's not in your system? I mean, is it possible the "high" isn't really much more than the relief of ending that discomfort?
For me, it's both. There is absolutely nothing enjoyable from craving nicotine. At the same time, there is a very enjoyable buzz from an initial spike in nicotine levels, especially after a good meal or other extracurricular activities. Somewhere between that spike in nic levels and nic cravings is the feeling of being normal.
I have quit and restarted multiple times now. The best way I can explain it is missing an old girlfriend that everyone else says is bad for you. Even after I had fought through the physical withdrawl, which, in my case, was much more intense and long lasting than what you describe, I still ended up starting again because I really liked it.
Is that a personality flaw or weakness that I should be ashamed of? Perhaps. At some point I just reached the age where I stopped caring as much what others may think, and I just enjoy my flaws.