go to a range where you can shoot various guns
Just last night I took two of my friends to an indoor gun range. Neither of these friends had much shooting experience; it was the second time at a range for one friend, and the first time for the other friend. I brought my Glock 17 (full-size 9mm); I rented two other guns: a Sig P239 (a less-than-full-size 9mm); and a Kahr P9 (a compact polymer-frame 9mm).
Both of my friends shot the Glock best and preferred its trigger. I had them fire the other two guns first before shooting the Glock. The first-timer shot the Glock much, much better than he did the other two guns, hitting roughly center target 9 out of 10 times at 7 yards. He loved the Glock and would not shut-up about it the entire drive home.
Some people complain about Glock triggers and just can't stand them. I have no problem with the Glock trigger: the initial slack is easily taken up, then simply squeeze until the trigger crisply breaks like a saltine cracker.
As for me, I shot the Glock best also (but I've been shooting it for over 10 years). I have to say that I was disappointed with the Sig P239; I really wanted to shoot that thing well. It felt so good in my hand and has great pointability--and it fires in single action. I thought that out of the three guns it would be the easiest to shoot accurately, but it wasn't for me--or for my two friends. Other people love Sigs, swear by them, and, I assume, shoot them very accurately.
Just because some people hate a particular gun, it doesn't mean it's a bad gun and that you won't love it; just because some people love a particular gun, it doesn't mean that you will or that it's the right/best gun for you. Go and shoot some guns. Get what feels good, shoots well, and looks appealing to you. I love my Glock. I hope you love whatever you buy. Happy shopping!
BTW, in caring for my Glock I have in the past been irresponsible and neglectful, forcing it to endure numerous shooting sessions without being cleaned or oiled. Not recommended, but it appears no worse for the wear. I cleaned it late last night immediately after shooting session.