For those living in the EU/Schengen Area, what is a daily convenience you have that you think the rest of the world takes for granted?

I’ve been reading about how integrated the EU is, especially with things like the Schengen Area and the Erasmus program. For those of you living there, what are the small things—like crossing a border for a weekend trip, working in a different country, or even just standardized rail travel—that you think significantly improves your quality of life? I’m curious to hear if people from other regions (Asia, Africa, Americas) wish they had something similar.