Foster,
You do have to admit, that sometimes, there does appear to be almost a peer-pressure like mentality to use AM parts. Whether it's the AM build that gets 1000 posts compared to an OOB build that gets 10, or suggestions in an OOB build thread on how an AM upgrade could have really helped bring more realism to the build.
Now granted, I grew up in a time when aftermarket parts were unheard of. If you wanted something, you figured out how to do it. Though to an 11 year old, I was happy with what was in the box. Now, 17 years later, I come back into the hobby and all you hear about is PE and resin upgrades. I though I died and had gone to modeling heaven. Upgrades that wouldn't cost me days of my life AND looked 100% better than what I could scratchbuild.
To me, adding AM parts are about the added realism. I like looking through books and finding elements that I want to add to a kit. Sometimes it's details in the wheel wells or maybe an open gun port.
For instance, in my HellCat, I really wanted an open ammo bay next to an open gun bay. Well, there was an aftermarket gun bay kit, but nothing for an ammo bay. So I built the bay from styrene and rectangular brass tubing. I made the airframe and cross brackets from square styrene rod. I got some ammo from a 1/35 Tamiya field artiliery kit. I'd say it didn't turn out too bad.
Now, in my Zero, I tried to build it OOB. But I couldn't. The lack of the simplest detail was making me a bit batty. So I made some harnesses and pedal straps from lead foil just to have something in there. Plus, I went kinda nuts on the paintjob, so that's where most of my focus was
I fully believe that AM definitely has a place in the modeling world. BUT, I also believe that a person should understand the how and the why before just spending 10x the cost of the original kit.
-Fred