The glock shoots great and is just as accurate as my favorite, a 1911. They are very easy to learn and shoot well with.
That being said, migrating from a 1911 was horrible for me. I pushed the trigger to the low and left when shooting and was all over (sometimes off) the paper. I compensated by thinking my weak hand was too weak or my strong hand was too strong and made matters worse. The big "u" messed with me badly and distracted my front sight picture, causing me to inadvertently focus on it and make matters worse still. I dry fired it several hundred times and finally addressed my trigger issue after I discovered my issue. Painting the rear "u" with a sharpie helped, but replacing the sights helped even more. I finally had to quit shooting my 1911's or revolvers until shooting with the glock became second nature (took more than 1k rounds for me).
It just seems to me that shooting a 1911 is easier to pick up, despite having a sefty to worry about. When I picked up a glock and shot it (seriously shooting it, not just trying someone's glock at the range), it took much work and practice and $$$$. It even took the fun out of shooting for awhile, honestly. But now that I'm almost as good with it as I am with my 1911's...I almost hate to get rid of it.
Oh, and while we're at it...an xd was much easier for me to transition to. Whenever I test drove an XD, I could draw and fire it just as well as my 1911, maybe even better. I don't know what the difference is, but I just shot it better. The grip angle didn't seem all that different (with a 19/23), so I'm not blaming the Glock grip angle anymore. The trigger was my biggest issue. I corrected it, then added a smooth faced trigger and a lighter spring (trigger pull is still over 4lbs) and improved that much more.
So why did I buy the Glock? Simple, I wanted one. I also figured with all the Glock love/bashing threads...it had to be a pretty great weapon if so many people loved and so many people hated it. Turned out that way with my Kimber. For every person that praises it, there's another person that bashes it. But it's given me 3500+ trouble free rounds thanks to wilson combat mags and wolf recoil spring changes on a regular basis.
Long and short...Glocks are great to learn on. Transitioning from a glock to another platform isn't hard from what I've noticed. Switching from a 1911 to a Glock? For me it was almost impossible and took a lot of hard work, asking questions and practice (and more practice, and more practice, and more practice). Now I have a buddy who shot all big bore, and strictly big bore handguns before. He became a deputy and had to learn to shoot a g17, and we shot a lot together. He picked it up with very little trouble...trigger reset being his biggest issue as he wanted to let the trigger all the way back out.
It boils down to this, most major manufacturers produce fine firearms capable of 10's of thousands of rounds with minimal maintenance. The shooter however, takes huge amounts of maintenance and an open mind to be able to shoot the weapon properly.
Shoot what you want, and learn to shoot it well. Just don't bash anyone else choice or preference cause we all enjoy the right to keep and bear arms.