Dirty Harry Callahan,
I can see that you're not going to let this go even though the answer will never change.
Any caliber will do as long as the owner is willing to put in the time. Nothing will be adequate if the owner is not willing to do any work. This is the answer to, "Is caliber X good enough for self-defense" and always will be. You can continue to post these polls, but the result will always be the same.
Fortunately, the purpose of this poll isn't to prove nor disprove the effectiveness of any given caliber, nor anything to that effect.
In fact, if anything I've been hoping since the beginning that the popular vote would be the sensible one that every cartridge polled is adequate, regardless of how many options featuring caveats/conditions are presented, so I'm very satisfied in that regard.
However, this is an evolving poll in which each entry will provide additional options based on the results and feedback of the former.
For example, in polls to come I will likely include an option for those who may feel that the cartridge is overpowered for self-defense against humans.
I'm also curious to see if folks will begin voting against certain cartridges, particularly the "9mm is just as good *hooks arm* as .40/.45!" crowd. Not to mention how folks will respond to more niche cartridges like .38 Super, .357 SIG, and 5.7x28 FN.
Rest assured, if folks continue voting for the exact same opinion that the cartridge is enough for primary carry, regardless of caveats, conditions, and alternative options, then I will be very pleased by the enduring sensibility of the userbase when presented with questions that usually prompt endlessly debates which never reach a satisfactory conclusion in the confines of an environment in which such arguing is discouraged.