No doubt the polymer pistols ushered in a new era in firearms. However, we think the popularity of the 1911A1 is evidence that it is still an excellent option. We feel safe in offering that for a large percentage of those who own copies of the 1911A1, sentiment and history have little to do with it.
We own three 1911A1 pistols, two of which have lots of "miles" and years on them; and we have never experienced any of the issues you mention. That is not to say that there are no problems with the various 1911A1 models extant, but we think more is made of these than the facts support. We also respecctfully observe that the plastic pistols are not immune from issues either.
Get yourself a 1911A1. Millions of dead Germans, Japanese, Italians, Koreans, and Viet Namese cannot be wrong.
We trudge on.