I've carried some form of folding pocket knife since I was about 10-12....for the last year a little 2.9" Benchmade "North Fork" w/ wood scales.
I've become fond of the 5" Ka-bar MarkI as a utility knife at the cabin.
I've got a Ka-bar extreme fighting/utility knife for TEOTWAWKI but the little Mk I is much more useful on a daily basis...... Picked up a couple of the early Hogue EX-FO1 that they were selling as "seconds"......we all seem to have a "big knife"........ or three...... I can't justify mine even to myself ..... but it nice to know I've got one....if the Zombies ever show up