As far as not wearing out I think the two methods mentioned: bow drill and magnifying glass are the only 2 that I know of. Will they fail in wet or windy conditions? Probably!!! But, in a LTS situation you're not going to have to start a fire each and every day in all conditions. You'll more likely have a fire going over days at a time. That being said....I'm sure that you have redundent fire starting devices....matches, bic's, sparklights, etc. So, being one of those "crazy" people myself I say have a few ways to start a fire and you'll be fine.