Why not gnat Ada in gcc?

[Richard Kenner]

    Who is still programming in Ada? and why?

This is *really* off topic, but basically Ada is the language of choice for
safety-critical applications.  Much Ada programming nowadays in done in
companies such as Boeing, Lockheed Martin, and Rockwell.  It is used
for such applications as avionics, air traffic control, and military
software.  Typical Ada applications are millions of lines of code.