I'm not sure if "HATE" is the word I would use for my feelings of certain calibers. I definitely don't "Respect" certain calibers. I don't respect a caliber that is designed just for marketing hype without any new practical purpose. While it's true that all calibers had an origination at one time; most can be shown to fill a niche requirement. However; the 45GAP serves no purpose other than for Glock to have their "Own" caliber. The 327 magnum is another useless caliber. There is NOTHING that either one of these calibers can be used for that another caliber can do at the same or cheaper price. And with a lot more availability.
I can think of a purpose, use, and rational for the following handgun calibers. 45LC/ACP; 44mag/special; 357mag/38spl; 9mm; 380/32acp; 22lr. I don't respect any of the others, because they were provided not for purpose, but for marketing and profit only. This includes the 40S&W. Yes, the 9mm is weak, and the FBI realized that the 9mm wasn't a good option. However; it was an original military round, and therefor legit. But the only reason for contracting for the 40 S&W (Which originally was the 10mm but do much for the FBI); was because they wanted a magazine capacity that was more than the 45acp. The 45acp was the "BETTER" round, but the 40sw/10mm was basically only designed because of magazine capacity. So no, I don't respect those 2 either. Nor the 357sig and any other caliber not mentioned above.
Do I HATE them? No. Would I ever buy one? No way. If I was given one for free, I would ONLY keep it long enough to sell it or trade. And I also believe that with 45acp, 357mag/38, 380/32, and 22lr; I don't even NEED the others. I.e. I would never buy a 9mm. But, I can RESPECT the 44 series, 9mm, 45LC, etc... These are calibers that have history. They were built for a reason. As such, they deserve respect. Building a caliber only for an economic niche profit market, I have no respect for.