There was a time, not too long ago, when all anyone wanted were hi-cap pistols. Big guns with lotsa bullets. Of course, we had a moronic legal situation where new magazines of such type were prohibited, which tends to make people want them more. Since the height of the hi-cap frenzy we’ve had even more states change their concealed carry laws to “shall issue” from their previous condescending “We’ll decide if you need a gun” laws.
Pocket guns are easy to carry and easy to conceal. Whether used as a primary gun or a backup, pocket sized guns are popular choices for civilian concealed carry. Many people consider .380 ACP to be the smallest acceptable caliber for a defensive weapon, making it a popular chambering for these diminutive pistols.
I've either owned or still own the Kahr CW380, Glock 42, Ruger LCP (1st and 2nd Gen), Sig P238, Taurus TCP and the S&W Bodyguard .380. I never had a problem with any of them. I always use decent brass cased ammo, clean and lube the gun before shooting it and don't really shoot more than 50-75 rounds through the pocket guns during a single range trip. I prefer the later model LCP over all of them for its intended purpose as a pocket gun. I shoot them all about the same, and the LCP is lighter and thinner than the others.