It was the lower end, Claris or Sora, and I hated a few things.

I was always sitting in the 39...Any time I was in the 50, the inner three gears on the rear were not usable (cross chaining).
It shifted oddly -- I adjusted it, I watched a video and readjusted it, I had the LBS adjust it, then I tinkered with it some more, and never found it smooth whatsoever.

I guess my main problems were just those...maybe there was something wrong with mine or maybe it was the lower end components, not sure...When I did a comparison and saw that I essentially had the exact same ratios available with a 50/34, I pretty much never looked back. I see a 50/34 as just essentially riding on the 50, and everything is usable from the 50, save from the 32 tooth gear in the back...then I have the 34 to climb. It just makes more sense, is way less messing around with the front shifter, and let's me focus on riding more.

I can totally see why some people like having a triple, although I guess something like a 54/39/30 would make more sense to me, personally (although I've never looked into if those exist). At least then there's a distinct advantage to having it.