Then ride away, no problem
If it is affordable, then it would be a precaution. Consider it a second defense line. No need to use it if you don't have to.
Stun guns don't kill or completely incapacitate if used properly. AND if the movies don't lie about it
The few cases of which a stung gun would help, as you mentioned, could be the difference maker. Limited does not mean non existent. Life only comes once. Not to mention that honer and dignity could be easily scratched but not easily healed. I'm only concerned about your safety.
I'm not suggesting a bazooka, it is just a stun gun that's affordable and can be used when needed.
Anyway, prevention is better than treatment we always say. So try to stay away from places with even the least speciousness.