It's different in Germany compared to the UK and France
Interesting comment. WWI is seen very much as a "watershed" in UK History at which point "society" changed fundamentally in ways which weren't so much the case with WWII. And of course the casualties were far greater in UK (and in France) relative to WWII (even if WWII did "reach" the UK home front rather more directly than WW1). I have done a quick approx comparison below for some countries - WWI - Mil Death/Civ Death......WWII - Mil Death/Civ Death
U States 116,708/757...416,800/1,700
For UK, WWI is also seen as a potentially "unnecessary" war which (conceivably) it needn't have been involved in, so it has a "what if" aspect to it which increases the poignancy of the casualties. For Australia and Canada WWI was a "Nation creating" event so has that "special" aspect for them - and also the military numbers were large in %age terms.
the question of personal guilt and responsibility
You mention the "Guilt" question in Germany re WWII. Is the Question of WWI "guilt" discussed at all nowadays (even only in Schools?) - and if so what is the "general consensus" at the beginning of 21st C? The issue of "unjust blame" was of course a major factor in the events which led on to WWII so cannot be totally "ignored".