I like carrying a polymer gun. I don't abuse my carry piece, but being polymer and stainless, it's nice to know if I sweat just a bit, or get caught out in a rain, I don't have to go running for the oil and clean it down ASAP, it can wait until it's convenient.
I like my 1911, but I actually think my Sigma fits my hand better. The grip is barely wider than the 1911, but shorter (lengthwise, not heightwise). I can reach the mag release with my thumb, in a natural grip, with my Sigma...but not with the 1911. I have to shift the gun in my hand to reach the mag release, although as I get more familiar with the 1911, I just may find there exists an aftermarket part to fix that...