It is great to live in a nation where not only can we legally own and use firearms, we actually have a broad range of choices available!
Revolver, semi-auto, rim-fire, center-fire, single-action, double-action, "smart action", large bore, small bore, long barrel, short barrel, big grip-frame, small grip-frame, blued, nickel-plated, fancy acrylic finishes, Parkerized, stainless, NOT TO MENTION plastic or steel or aluminum. I even remember a company making a dedicated mirror-image left-hand version of the 1911 some years back.
Something for every preference. Something for small hands and large hands, short fingers and large fingers. Something for he-man dragon-slayers and something for recoil-sensitive woosies like me.
Personally, Glock pistols have never held my interest. The idea of carrying a plastic weapon is something I never warmed up to. That doesn't mean everyone else shouldn't have what they want or what they are comfortable with. My opinions may be infallibly correct (in my opinion) but I don't want to force anyone else to agree with me.
I own Sig pistols and I think very highly of them. Picked up a P6 (West German police surplus P225 variant) back in the late 1990s for ridiculously little cash (under $200 delivered). The P230 is a fine lightweight and concealable .380 (pawn shop rescue at $225). Most recently I acquired a P229 (LE trade-in, Sig factory serviced to as new), also for incredibly low price ($388 instead of the $1087 MSRP at the time made it a no-brainer deal). I owned a P220 for a while, came to me in a trade but I just couldn't get used to the overall size and grip, so I let it go down the road.
Glocks started showing up about 1990. Sales reps were pushing Glock pistols to LE agencies all over the country, putting on dog and pony shows to sell the pistols. I remember one demo with the salesman tying the Glock to the bumper of his car and dragging it down a gravel road for about a mile to the range, then blowing the dust off and firing 3 magazines. LE prices were practically give-away deals (less than a S&W Model 10). The marketing worked, allowing Glock to continue with full-page advertising in all the gun magazines, bragging about all the LE contracts, and selling Glocks like cold beers on a hot day. Then they got all the free publicity in the world when the media talking heads started having conniption fits about "plastic guns" that couldn't be detected at airport security checks.
Get what you like. Let everyone else choose what they want.