re: Would you rather have gone “over the top” in WWI or been on the first wave on D-Day?

Clearly, Normandy:

Three of the five Normandy beaches were relatively easy, so that alone gave you a 60% chance of not getting into a shite show.

WWI tactics developed slowly so allied artillery prep remained almost useless, there was no surprise and the lethality of the machine guns were largely ignored by the offensive planners.

No WWI attack by the allies had much success till late in the war.