For the same reasons some people collect cars, money, jewelery, tools, etc.. Sometimes it is for the value, or the use, or the history of the item and sometimes it is just because they like how they look.
Yes.
There are various reasons. Some people enjoy using them for recreation, some people keep them for self defense, some people simply collect them. And unfortunately, some people have them so they can commit violent crimes.
People who buy them for hunting, people who buy them for sport, people who buy them to collect, people who buy them for personal defense.
I usually describe the period of history and type of militaria that I collect. Some people collect guns or bayonets, only. Some collect uniforms or medals or hats. For example one area that I collect is British Regimental Cap Badges. Each person has their own reason for collecting a specific type of militaria. Some want to collect from a certain period. Others may collect only items related to Paratroopers or Aviators. Some will collect Maps because they are colorful. And some collect things that they think will increase in value. It is a personal taste.
People are not killed by guns. People are killed by other people. Some use guns, some use other objects.
shotgun
No. There was crime before there were guns. I collect guns. My children and grandchildren are hunters and target shooters. I do not commit crimes, nor does my family. People that want to commit crimes will do so, with or without a gun.
collected guns
collect
The cast of Some People Collect Stamps - 2011 includes: Nicole Horton
NOPE
People think that guns are good because to carry around because of people of they see people using them on tv or movie/films of people & postors of people with guns thinking that they are cool.