Airbus to put sleeping berths in cargo holds

Even if you are doing a transcontinental flight, I would much rather be set up in chair with ample leg room and access to my own entertainment system.

If I'm hopping on a 8 hour flight across the Atlantic, do I really need to settle in my own sleeping compartment as if I'm spending the night in a hotel?

Perhaps for super long haul flights from Australia or NZ this makes sense, but getting settled into a bed for an America - Euro travel seems unnecessary.