How Do You Choose Which Optic To Use?

I used to believe that I absolutely must choose a single philosophy for my home defense rifle / optic combinations. Thereafter, I must remain loyal, for all time, to one of the below philosophies:

1. 1. 1. The AR-15 was meant to be a light, handy rifle. The 5.56 doesn’t pack enough punch for very long distances. Therefore, if you have to have an optic, the best fit is a simple, small, low-weight red-dot.
      2. The Trijicon ACOG may provide the perfect combination of simplicity, durability, and magnification. It’s good enough for The Marine Corps, so it’s good enough for me.
      3. The Low Powered Variable Optic (LPVO) has improved in durability, weight, and technology over the years. The LPVO provides both long-range target identification and close-range speed, all with the twist of a single ring.

As time has passed I have come to realize that the correct answer is: any of the above. In general, I like the red-dot for close range and the LPVO for long range. But I no longer feel eternally bound to any one category.

Rob