Unless you're buying something denominated in Euros, looking at the exchange rate is silly.
A European investor who converted Euros to buy the Dow has lost money, when converted back into Euros. An American who used dollars to buy the Dow has a decent profit, even after taking inflation into account.
Its clear, the confusion is on your end.
LOL!
You have no clue.
good bye
Oh wise master, how insightful of you. Now how about all the stuff that we do buy that is priced in Euros? Like wine and cheese and moosemeat.