Would like your thoughts on this!

A couple of days ago I was going on an errand after dark.  As I was going down one of the side streets a vehicle turned the corner and got behind me.  Now the only reason I knew this vehicle had turned the corner was because I saw the turn signal light and that was all that  I saw.  It did not have on its headlights.  I stopped at the first stop sign and opened my door and pointed to the headlights, pointing several times trying to stress the fact "hey you need to turn your lights on".  The person looked at me like I was nuts or something.  So, I started driving and at the next three stop signs I hit my brakes several times hoping this would make her realize her lights were not on.  Still to no avail.  Well, I finally came to the highway and turned into the store I was going to.  The vehicle turned onto the highway and kept driving.  It was a black SUV type vehicle.  I was so upset that I could not get the person to realize she needed to turn her lights on.  I watched it travel down the busy highway and it was very difficult to see after only a few feet down the road.  I prayed that no harm would come to the person due to her neglect.  And I prayed that people on the side streets would be able to see it somehow and not pull onto the highway and hit it due to the fact it was no visible to them.  It was very scarey to say the least. 

Well, I was still upset about it when I got home and told my husband about it.  Well, that was a big mistake.  He yelled at me for being so trusting and naive.  He said it could of been a person who wanted to kidnap an unsuspecting person.  Playing on someone's caring and trusting spirit (like me) and had the lights turned off on purpose.  I did not even think of that.  I am not a paranoid person like my husband.  He thinks bad of everyone.  He doesn't trust anyone.  He believes everyone is out to get you.  And he also said that even if the person was not a kidnapper, the person could have been someone who had rage issues and did not like someone telling them what to do and could have jumped out to beat me up just because I stopped in front of her.  I don't think this way at all.  But this day and age there are mean people out there and I guess I should not be so trusting.  He said I should have practiced more caution. 

Now I know in his point of view that all makes sense, but I just could not help it.  I thought I was doing the person a good deed.  I did not want the person to have an accident.  I thought I was protecting people that would come near the vehicle.  There have been times I did not have my headlights on and people flashed their lights at me and it made me aware of my neglect.  I just wanted to help the person realize she needed just turn her lights on and it would stop a potential accident in the making.

Now, I need your thoughts on this.  Would you have done what I did?  Or do you think my husband was thinking more logical?