About TRIBES and SIGLINES and [name of your choice] Rules...
Many years ago a social observer named Eric Hoffer noted that recent converts to any political system or religion tended to be among the most strident "converters" of others to that belief system.
He said it was because the recent converts weren't fully comfortable with their new belief system and needed reinforcement.
When YOU, as a recent convert, prove to the "unwashed" or "ignorant" that your choice was the right choice, there's no better proof/reinforcement of the soundness of your earlier decision than seeing them repeat it!! So it is, perhaps, with many of the folks touting their handguns, cars, religions, or political beliefs.
I've found, over the years, that people confident in their beliefs don't have to convert others -- they just do or use what they do or use and enjoy their choices. (But when asked, will tell what they know.)
Perhaps some of our staunchest advocates here and on other forum are just a little NEW to the "game"?