I've been bowhunting for 50 years and have known quite a few people that have ended their hunts by cutting their strings with a broadhead and not having a spare.
Because of this,I've carried a spare string and usually a stringer too-always.Last week I went out to work on a ground setup and took my bow to check shooting angles.I was on my knees cutting some limbs and shifting my position,my knee landed on a pebble and when I lifted my knee,put my hand down to catch me and in it was my sharp,folding saw.Pop!Right down on the SBD string and no spare!
So,I'm now a member of the club.I was going to be traveling through antelope country later and was hoping for an opportunity for a stalk but that was done.My spare was at home.
Normally,I carry a small baggie with a spare string,all set up,a stringer,a couple carbon nocks and some spare rest material.It is back in my pack and I plan to never cut another string(I think).Always carry a spare.