I feel sad for the likely future where you can't go anywhere without seeing English. It's one of the reasons tourist traps feel so grotesque.

Easy for me to say when I'm already fluent in it, but one of the most novel, equalizing experiences of travel is being in a new place and not having the crutch of your native language.

Of course, also easy for me to say when none of the downsides of EU fragmentation affect me.

I mean, as a romantic I identify with that dreamy fantastical novelty of immersion in a foreign culture, but pragmatically (and less solipsistically) it will bring immense utility to decide on one language to use as we approach globalization.