I'm the same, I don't find autoclosing ", (, etc a time saver but rather a hindrance to coding, Id love to turn all auto-closing garbage off
maybe if on a press of the 'tab' key the curser would skip over the auto-inserted-closed ", (, etc instead of inserting a tab space then this would be a bit more productive feature
At first I thought I was going to find that this was yet another situation where Apple "decides what we really want, even if we don't". But I found the answer to this. You can disable this behavior under Preferences - Text Editing - Editing and UNCHECK "Enable Typeover Completions". I couldn't find this previously because, for the life of me, I couldn't figure out what they meant by "Typeover Completions"! Also, several other options have tooltips... this one, with it's enigmatic description, doesn't have one.
Disable closing braces:
Xcode > Settings... > Text editing > Editing > Automatically insert closing braces > Disable checkbox
Disable closing quotes:
Xcode > Settings... > Text editing > Editing > Enable type-over completions > Disable checkbox