Well, I guess I'll chime in as a Glock fan.
My Glocks all have Tenifer finish, which I understand is about as hard as a diamond. I believe the P99 has a similar finish.
My Glock triggers are fantastic. Crisp and predictable. As good as any double action duty pistol out there IMO. Not too long or short of a pull.
I just love the streamlined simple look and feel of a Glock. No nonsense pistol. Crisp slide action. Clean lines. Near total reliability (I won't pretend they don't occasionally fail - I have experienced the extremely rare failures; unsure of the causes - in the tens of thousands of rounds I've fired through various Glocks. I believe failures in Glocks are an anomaly). Light weight. They all feel and function the same. Mags interchange with others in the same caliber. Awesome to have lots of 22 round mags loaded for action. Awesome to have a backup smaller framed gun that takes the same mags. Awesome to swap out barrels and mags from .40 to .357 sig or 9mm in the same framed pistol.
There is a reason that Glocks dominate the law enforcement and competition arenas.
I'm in the financial position to afford any pistol I want to use for home defense or carry. I've have owned or still own HKs, Sigs, CZs, Rugers, Smith&Wessons, XDs, 1911s, Browning High Power, and tons of revolvers and so forth. But I keep a Glock 35 (.40) on my nightstand and a G23 (.40) on my hip. When I go jogging, I typically take a compact Glock 9mm with a 15 round mag in a belly band.
I will concede that Glocks are not the most attractive. I actually love the look and feel of Sig Sauer pistols, especially the stainless frames, and 1911s. I love the 1911 feel and weight. Lots of amazing guns out there; and I'm proficient with nearly every platform. But I always go back to Glock.