The unintended consequences of studying WWII

I have a WWII romance in the writing queue. After finishing Slayers 4, an Echo Ridge romance novella, and an upcoming project that I haven’t seen the contract for so I won’t announce yet, I will finish it. And because I know it’s there I’ve been watching WWII documentaries and reading books set in WWII for about a year. Here are some things that will happen to you if you study the subject as well.

You will be hungry. Seriously. I don’t think you can learn about Leningrad or rationing without getting hungry–or looking at your pantry and wondering how long you’d last if war broke our. Or stockpiling food because of the aforementioned question.
You sources won’t always be clear. I watched one documentary yesterday that said Britain had 40 million people living there during the war. One today said 50 million. Ten million is quite a difference when it comes to a place the size of Idaho. Germany and England have different dates for how long they think the Battle of Britain lasted. How can I be accurate when my sources (in this case both documentaries put out by the government during the war) contradicts itself?
You will be dumbfounded. I can’t wrap my mind around the magnitude of this war or the depths to which humanity will sink. I understand madmen exist. It’s so much harder to understand that nations will follow them. And it wasn’t just Hitler. The atrocities from Japan were just as bad. And Stalin was in some ways worst because he committed atrocities against his own people. (And Russia was helping Germany up until the day Germany betrayed Russia and attacked them. I haven’t learned much about Italy but I’m assuming it wasn’t much better. ) How could that many people be so brutal?
For every one question you find an answer for, it will raise two other questions. I finally decided on a bomber for my German character and in doing so learned that they didn’t just take off from Germany and France. They also had air bases in Norway and Belgium. Now I’ve got to figure out which base his squadron  came from on the day of the attack in Chapter one. At the rate I’m going, I will never finish researching.
You will see death. It’s odd to look at the footage of crashing planes or dead soldiers and realize this isn’t Hollywood’s fakery. It’s real death. I’ve seen the moments before someone died captured on film. Over and over again. I’ve seen countless dead bodies that used to be someone’s son, brother, father, husband. These people had plans, goals, and personalities before war came and cut them all short. And it’s horrible to see and know that it’s real. Yet at the same time, I think every person alive should learn about WW2. It’s not just history, it’s the ultimate cautionary tale.