What is it about Glocks that makes people feel they can be less safe than other guns?
As others have stated, it's fine as long as you keep your finger off the trigger- and make sure your jacket drawstring, holster retention strap, yadda yadda yadda never hang the trigger.
It's not an unsafe gun, but there are others that are "safer". The trigger thingy is NOT a safety (which Glock has stated). The XDs have a grip safety-passive, so you don't forget to flick it off when needed (not that 1911 style safeties ever bothered me), but an extra measure of safety. When holstering an XD, just place your thumb on the back of the slide-prevents the gun from coming out of battery if it hangs on something, and by doing so, you remove the web of your hand from the grip safety.
As Ayoob said in one of his articles-he would NEVER Mexican carry a Glock, but has done so with an XD on numerous occasions.
And there are waaaaaaay to many noobs getting Glocks and immediately having "trigger jobs" done on 'em.
If this is going to be a working gun, leave the trigger alone!
Learn to shoot a long, heavy trigger (not that the Glock is such) and you'll be a better shooter in the long run.
'Course, I was raised on DA revolvers-not video game triggers!
EDIT: Remember Plaxico? We also had a local retired PD detective Mexican carrying a Glock that had the same thing happen. Incredibly enough, he was a PD firearms instructor, and had been warned by folks 'bout Mexican carrying his Glock. He and friends were eating at a local restaurant after attending a funeral, and when he got up he reached down to pull up his pants and...:banghead: There were 6 folks in the restaurant injured by flying shrapnel.
Don't know what kind of gun
this guy was carrying, but it just reinforces the need to keep you finger off the trigger (and the utility of a safety?)!