For the most part, the reason we eat leftover pizza cold is either out of sheer laziness or the fact that once reheated, it never comes out quite the same as when it first arrives fresh.
Warming up in the oven takes forever and can harden the crust while nuking creates a soggy mess.
However, the experts at Domino's recommend a better method for the latter, advising that you place a cup of water inside with the slice before you fire up the microwave for 30 seconds.
The pizza chain's Australian arm does admit it still won't be perfect but notes that the results will be far better than the old ways.