First of all a glock is an accident waiting to happen, any gun without a double action trigger pull or a manual safety is an accident waiting to happen. Add to that many people modify their glocks to have lighter trigger pulls, glocks are dangerous not only to the shooter but also to everyone around them.A Glock is a perfect first gun. Affordable, uber reliable and easy to maintain, will shoot under practically all conditions, parts/mags are available everywhere, and under stressful situations and beginning shooters I think the capacity advantage over a revolver is a huge plus in a real self defense situation.
They aren't pretty, 1911's are, but are also finicky unless properly maintained (regularly). A 1911 is also a smoother shooting gun.
1911's are not finicky they are stone cold reliable, but you have to do your part, just as with any gun, clean it every once in a while keep it lubricated and don't try to work on it unless you know what you are doing. I have seen people seriously mess up a 1911 because they tried to polish the feedramp and did it wrong turning it into a jammomatic. When they are told that they turned their $1000 pistol into a paperweight they get pretty upset, and even more upset when they find out the only reliable way to fix it will cost almost as much as a new pistol.