In some cases, we want freedom... and that's something that has been neglected a bit too much with new programming languages IMHO. Safety/security feels like it's the latest of the dumbing-down "let's treat programmers like idiots" fad.
See http://static.rust-lang.org/doc/master/rust.html#unsafety
Nothing new in software development. All the "new" shinies are decades (!) old.
I wonder how we got sidetracked like that.