I absolutely love to shoot well-built all-steel 1911’s. I just shoot them better than anything else, at least in terms of slow-fire, bullseye type accuracy. I also shoot my steel-framed CZ75B more accurately (slow fire) than I do my Glock 34, but for whatever reason, inside 12 yards or so, the G34 is the rapid-fire/acceptable accuracy king of my stable.
One thing about 1911’s is that you really can’t lump them together as a whole. My old Auto-Ordnance/Thompson 1911 was more different in comparison to a Les Baer 1911 than say (just randomly) an XD-9 SC is to a Glock 20, in terms of functional reliability, accuracy, durability, and build quality. I’ve had a really crappy 1911, I’ve had an OK one, and I’ve had an awesome one that makes me not want to shoot anything else. My best-performing 1911 was by a considerable margin the most expensive, but I’ve had friends who’ve reported great luck with inexpensive ones. My two cheaper 1911’s were at best slightly disappointing (Springfield GI), or at worst complete garbage (90’s era AO).
If I had to carry something around all day (especially concealed), a lightweight frame starts to earn bonus points. And I imagine a modern poly frame with steel inserts/rails would hold up as well or likely better than an alloy frame. And most modern big-name poly’s have been demonstrating excellent reliability and durability. I must admit, I don’t plan on any of my plastic pistols reaching family heirloom status.
I much prefer the look and feel of all-steel pistols, and how they shoot (1911‘s in particular), next to any poly-framed job. If, however, I had to pick a $400 - $700 pistol and were to expect it to function out of the box perfectly, I might lean towards a well-reputed polymer-frame model vs. a 1911. I think the mass-production process lends itself better to the plastic-fantastics than it does to 1911’s.