Measuring stopping performance

[j-c-c]

So its standard to measure acceleration 0-60mph in seconds, then why is 60-0 stopping for instance, always? measured in feet?
Seems seconds would be more indicative. One could stop from 60-0 in 100ft in 4 or even 10 seconds if one desired, not sure why one would though.
It doesn't see because time measurement is more difficult. If you want to guess have at it, if you know and know why, please share.