How much does a 65 year old retired couple today need?

Assuming no more mortgage and debt free, no car and no maid,

1. Food - $500
2. Utilities - $100
3. Public transport and taxi - $100
4. Holidays (pro rated) - $300
5. Helping the poor/donation - $50
7. Healthcare and insurance - $550
6. Miscellaneous - $200

Total - $1800

As you can see, a retired couple who lead a healthy, good life don't really need much.