To me, one is a work of art, the other is a study in simplistic design and reliability.
I have a special place in my heart for the 1911 as my grandfather (a General in the Chinese Nationalist Army) carried one that he was issued in WWII and subsequently carried, into the post war years. I remember seeing it as a 5 year old, meeting my Grandfather for the first time. I fell in love with that gun. The 1911 was the first "non-.22" pistol that I ever shot and I have a fascination with WW2 firearms. I cringe to this day that my dad sold his Browning HiPower to help me pay for college.
The Glock, to me, is also like a piece of artwork, but much less in a Rambrandt, fine art style, but more in a "Modern Design" vein, like something you'd see in MMoMA. Strong clean lines, ingenious mechanical movements, i'd say it's one of those things that, like modern art, you appreciate, tolerate, or hate.
I never understood the "that gun SUCKS, my gun's the best" debate. It's just like with motorcycle or car brands. They're all good, otherwise, they wouldn't be selling. Each meets the needs/desires of its user.
Anyway, my .02.
D