As a young adult I found it rather disgusting that my parents would re-heat their cups of coffee several times in the microwave on a daily basis. To me, if it wasn't piping hot and fresh out of the pot, it simply was not worth it.
Now I not only warm up my favorite mug every morning (three times so far, today), I thoroughly enjoy it. And I understand that in all those years watching my parents sip on stale beverages, I was observing the sweet tasting of a mother and father's love for their children. Our needs always came before their good coffee! :)