Which war was more horrific? WWI vs WWII?

WWII by far. 60,000,000 dead, genocide, millions of civilian casualties, nukes being used, etc

While WWII racked up a higher kill count, I'd much rather serve in it than WWI. Trench warfare sounds lousy.

WWII was worse overall especially if you include the holocaust. On the battlefield however, I'm almost certain that WWI was far more hellish.

The Holocaust really wasnt apart of WWII. They're 2 separate events that happen to have occurred during the same time frame. The Holocaust would have happened regardless of WWII, and WWII would have happened regardless of the Holocaust. Now if the Allies would have gone to war to stop the Holocaust then I would consider them linked, but as it was the Allies didnt even know about it until late '44.