I agree with everyone on this thread!
It's funny, when the 13's first came out, I had this debate as well. And I'm STILL having it, because I knew I wasn't going to get a new phone until after the holidays. Well here we are, the holidays are just about over...and I'm still not sure.
I was on an SE 2016 until 2020, when I got an SE 2020. That is the largest and heaviest phone I've ever had! So I figured I would get the 13 mini, which is nice and light and small but with the bigger screen than I was used to. BUT...I really wanted that telephoto. I've got posts that go into this in much more detail, but basically I would like to shift some of the things I do with my DSLR to my phone. To do that effectively, I would need that telephoto! Which would mean the larger, heavier, 13 pro.
So I did what any sane person would do (*cough*) and taped a heavy coin to the back of my SE 2020 to simulate the weight! I used it that way for about a month before my case began to come apart, lol. The weight difference WAS noticeable (though this was an imperfect test: that weight difference would be more distributed over a larger area than the coin), but after a while I got used to it, mostly. I had pretty much decided to get the pro.
Then...
Two months ago I was in an auto accident, and suffered a badly broken wrist. OK, this is temporary. But I'm still in a brace, and my motion is still limited though getting better...and I find using my phone two-handed (which is how I've always used my phones, even the smaller ones) is more uncomfortable than it used to be. Temporary! I hope! I don't want to think about the alternative!
But it did have me thinking about getting the 13 mini instead. For me the tradeoff is the weight and size, which would bother me a little bit every time I picked up the phone, or giving up the telephoto, which would bother me a lot but only occasionally. Now with the wrist injury, increase the bother on the weight and size (temporarily! temporarily!

). I had decided to forego it, and get the mini, and perhaps try one of the external telephotos for phones.
But...
The last time I was in the Apple Store I handled the regular 13 as well, and it's comparatively light, too, at least compared to the pro. And a bigger screen. And it still fits in my pocket just fine. Maybe I'd be happy with that as a middle ground, and maybe I'd be really happy with that.
Except...
I'm used to Touch ID phones. We can discuss whether Touch ID or Face ID is better, but the real point for this post is that I am used to the bottom of the screen being up *here* and not *way down here*. Even the mini will represent new mechanics for (TEMPORARY! PLEASE TEMPORARY!) one-handed use, just to go back to the home screen. That will be tough enough on the mini, and would be even tougher on the regular 13.
So, there it is, as clear as mud. I still don't know which one I will get, and I am setting myself up for buyer's remorse no matter WHICH phone I'd buy!