Unlike a lot of internet "authorities" that will tell you what you need I'd prefer to tell you how to find out what will work for you as an individual.
Since you're not interested yet in having a variety of handguns from different families (Glock, 1911, CZ75, ...) the best thing to do is find out what family you point naturally so you don't have to buy a lot of different guns finding out what you shoot best.
Since you've been pointing at things since a small child there's a natural characteristic to you pointing. That can translate to the angle between the grip and the barrel of a handgun because there's an angle between your pointer finger and the core of your palm when you point. If the "grip angle" corresponds to that angle between the finger and palm you'll be much more likely to point the handgun more naturally/accurately/and with more stability.
Pointing the firearm more naturally means that you'll be more accurate with sighted fire since you won't have to put more effort to bring the sights into alignment and you'll be able to handle recoil from the handgun because all of the structures in your hand and wrist and forearm will be more aligned to absorb the recoil. Being able to handle more recoil then means you'll be able to shoot more powerful calibers with greater control and comfort.
The unfortunate thing is that it takes experimenting with the different families of firearms to find out what you point. The lucky thing is that you can speed the process by handling them without firing them and finding out which points to the point of aim without firing them initially. You'll need a Glock, 1911/XD, CZ75 and a Sig available. The first thing is to handle each and learn the best high one hand grip on each so you have a comfortable solid grip before ever pointing/aiming it. Once you get that grip you'll need to stare at a small point roughly 30 ft. away. This will sound silly to many, but your vision seems to collapse into a tunnel and that point becomes all you see. You need to do this with a safe point 30 ft. away. If you're in a gunshop the best point to focus on is the intersection of two walls and the ceiling since it is presumed to be a safe point of aim. The third thing you need to do is to imagine a rod sticking out of the barrel of the pistol and instead of sweeping the gun into alignment with the corner you must lift your elbow and then shove the rod into the corner as if you're skewering something in that corner.
Grasp the gun, focus on the corner until it is all you see, cock your elbow and shove the pistol into the corner you're focused on.
Then look at the alignment of the sights.
I'll repeat, only after you've shoved the imaginary rod into the corner do you look at the sights.
If the sights align well on the point in the corner you've found the family of handguns you naturally point to point of aim of the pistol. If you notice that you have to lift the front sight or drop it to make the sights align you know you need to walk away from that family of handguns and try another. You may not point a 1911. You may not point a Glock. Quickly, though, you'll find which family of handguns you point into that corner that also has the sights aligned.
I love CZ75s, but I point a Browning Hi-Power. A buddy loves 1911s, but he points CZ75s. My wife doesn't care and she points CZs also (some things just ain't fair
). A friend of ours points Glocks and he loves Glocks (no accounting for taste
).
If you happen to point a 1911, but you want a double stack pistol you can find Springfields and Kimbers and STIs that fit your hand and reach to the trigger as well as the grip angle so that you find the perfect fit. If you point Glocks you won't have any trouble there since a Glock is a Glock. CZs, lots of CZs and CZ clones. If the single stack 1911 is the perfect fit then there are tons of single stack 1911s.
If you want to start out with a gun that fits you so you don't have to make yourself fit the gun it is easily done. You just need to go where they have a CZ75, a 1911, a Glock and a Sig and try to point each one into the corner at the ceiling to find out what points for you.
Knowing you point a 1911 or Glock or CZ save a lot of time and money. You can decide to purchase an expensive 1911 or CZ or an inexpensive version (Armscor offers inexpensive versions of both that have been surprisingly good). Then you can decide if you want to shoot 9mm, .40 cal, 10mm or .45 out of it and start shooting.
Kathy at CorneredCat.com has further advice on fitting a pistol that addresses grip width and reach to the trigger and is a wealth of information on issues pertinent to all shooters and women in particular.
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