Question for those who carry waved knives and karambits: Do you face situations often where you need to defend yourself with a knife? If so, that is scary. If not, why carry these types of knives?
Same reason people think they need to carry a gun. Just in case. Sh*t happens and you never know when/where that might be.
FWIW, I'm a retired LEO and can legally carry a gun concealed whenever I like, within the limitations of the law. However, IMO, carrying a gun is a PITA which also carries with it great responsibility as well as substantial potential criminal and civil liabilities. So, I only carry a gun when I think that I will be somewhere where the "risk" justifies it, which is seldom the case for me anymore.
So, I carry a Bastinelli/Marcaida Pika karambit (as well as a folder) which are very compact and easy to carry w/me everyday instead. The knives will not do me any good in a gun fight but the probability that I will need a gun during my normal daily activities IMO is very low and, for most situations that I'm likely to be involved in, the Pika and folder will be sufficient for any SD necessity.
The most likely situation requiring the use of the Pika or folder would be a verbal confrontation w/another person which escalates into physical conflict. Of course, I would try to deescalate and walk away from the situation but if I can't and if I am physically attacked, I would have no hesitation in drawing either the Pika or the folder to use in SD.
Unlike a gun, the potential liabilities for using a knife in SD are far less than a gun in terms of the likely physical injuries caused as a result. Often, simply drawing a knife can defuse a confrontation; there'll still be verbal insults exchanged but when an unarmed person is confronted w/a knife, they usually back off.
Also, unless you intentionally target specific body parts (like the neck and inner groin, where the carotid and femoral arteries are most vulnerable) any cuts that you make are unlikely to be fatal; not so a gun. Drawing a gun these days is also likely to create chaos and immediately draw the attention of law enforcement. Not so a knife.
So, that's why I normally carry a Pika karambit and a folder w/me everyday instead of a gun.
However, given the recent history of mass shootings in public places from clubs to places of worship, if I frequented such places, I would ALWAYS carry a gun with me because those places have been proven to be susceptible to attack w/o warning and I'd rather be prepared than not.
PS: I am also a retired attorney, inactive but still licensed to practice law in two different jurisdictions.