I've never liked that phrase - 'back to reality'. Your travels are a reality too, just a different one. And I always felt if you're not happy with your day-to-day reality it's probably time to update it.
Regardless I might have uttered that phrase once or twice on moving back to the UK after a year in New Zealand and months of travelling. Coming back to England to my old university definitely held some mixed feelings! But I'm so excited to put into practice what I've learnt in the last 16months and adapt and ultimately improve on my old reality!