Don't like the weather at your destination? Just divert wherever you feel most comfortable, no-one will give much of a toss as company won't have to organize and pay for 400 hotel rooms.
No more waiting for that late first class pax who holds up a 300 million dollar airplane with crew and 400 other pax because she or he loses track of time in the duty free.
Need to take a leak? No need to call for a flight attendant to babysit the other guy, just walk through the curtain.
Basically they give you the world's greatest airplane (747), a colleague or two, a destination, and then leave you alone to get on with it... pure fun.
