Having all clocks of the world in sync will be a bless, but there remain a gap in time information, so people will add location offset by themselves (we mostly

Having all clocks of the world in sync will be a bless, but there remain a gap in time information, so people will add location offset by themselves (we mostly use time to describe life in our timezone) "yes it's 4 am, and i'm in paris". That location offset will be nothing but current timezones, with an inverted logic. I know we are all on different schedule and rythm, but 7am is a good time for breakfast, everywhere, 12h30 feels fine for lunch, kids go to bed by 8pm, and we should sleep at 2am. I guess timezone make life easier for 80% of the world ( i dont think it's 99% anymore)