#UIKit poll: when you add #AutoLayout constraints, do you use SystemSpacing in any capacity?

I'm curious because I’ve finally made the effort to find out what it is and why its there

Never (= always use constants)
66.7%
Sometimes
27.8%
All the time (= never use constants)
5.6%
Poll ended at .
Thanks in advance to anyone boosting the poll for visibility + anyone providing examples where they find SystemSpacing especially useful