Hi Mongoose,
You'll get various answers from everyone here as to what they put down for their reason. Mine was because I collect multiple cash rents as a landlord. I know others here have put down a simple, "to protect my property, person or both" and have gotten their permit. When I was applying for my permit this question gave me the sweats just wondering if they were going to accept my reason! LOL
My two cents is to put down what you stated, but I'd leave the whole "other states with reciprocity" out as well as the word "Dover". Maybe something like "low income areas, run down areas, etc" could replace the city name. These are just my suggestions. Others will probably respond with their thoughts as well.
Good luck! Let us know how you make out. Be sure to read other threads on the site here too. There's a long wait apparently for new apps, you need to follow the time frame of the application stuff (like fingerprints, newspaper, etc).
Moosie