At my first job I wrote a bunch of AVR assembly because C was too slow for what I needed it to do. I believe the application was having the microcontroller do s

At my first job I wrote a bunch of AVR assembly because C was too slow for what I needed it to do. I believe the application was having the microcontroller do some measurements of sound propagation through a medium that was much denser than air, and thus it needed to wake up nearly immediately after the sound happened. By the time whatever initialization the C code did was done, it was too late. Assembly did the job superbly. This was not that long ago, around 15 years ago. I really enjoyed AVR assembly. Are these microcontrollers still in use nowadays?