I carry cord of some type in my backpack all the time.
I have started to use type 3 para-cord for quite a few applications (tents, tarps, dummy-cords). For simple day trips I may only have 15-25' of type 3 cord, but for over night trips and wildland firefighting/SAR I usually keep 25-50' of type 1 cord in addition to the type 3 paracord or spectra cord in my PSK.

In my truck I have probably 500-1000' of type 1 paracord almost all the time. It seems that I can find uses for the stuff on an almost daily basis. Usually have a spool that I pull off of as needed in my truck... at a recent training event I used all but about 100' of a new spool for various applications (and handing out to under-prepared students).