Strangely enough, some people do not appreciate the engineering that goes into designing and building firearms and the ammunition. Both are modern marvels of design, engineering, chemistry, and applied physics.
A man can never own enough finely crafted toys! Although the squad weapons speak with great authority, they also cost a small fortune and would be cumbersome for individual self defense. For that, my personal favorites for reaching out for long distance is the Remington 700, in .308; for intermediate range is the Smith & Wesson M&P 15, in 5.56; for sweeping up, the Remington 870 12 G; and my personal assistant, the S&W M&P .40.
My vote is for a safe, civilized world.