There is a thread on the old Apple Swift forum that addresses why they like Swift. Its an old post from 2014 called : Why Swift? And why now?. You will need at

There is a thread on the old Apple Swift forum that addresses why they like Swift. Its an old post from 2014 called : Why Swift? And why now?. You will need at least a free developer account to be able to log in and see it. https://devforums.apple.com/message/986257#986257 https://devforums.apple.com/message/986257#986257 "13 of the security issues fixed in 10.9.4 could have been prevented or mitigated by Swift (9 buffer overruns, 2 int under/overflows, 2 null derefs). That alone makes it worth it from my point of view. As for performance, that's a work in progress but is improving rapidly; Swift is already faster than ObjC in some cases."