I have no issues with timezones at all. Morning will be in the morning (as per the clock), wherever you are, and timezones are reasonably well defined. Without timezones you would still need a system defining what the local equivalent of "morning" or "evening" or "working hours" is, in whatever town the person you're calling is in - and I feel we'll be going back to how things worked before the railway chaos forced the introduction of timezones.

What I hate is DST. That's not only useless, it's problematic. Heck, my old mother never managed to handle the change this last fall, in her nursing home - meals didn't come at the optimal time, she got undernourished, it destroyed her sleep cycles, and her health went all downhill.