Flawless Male Logic as its best :

Woman:
Do you drink beer?
Man: 

Yes

Woman:
How many beers a day?

Man:
Usually about 3

Woman:
How much do you pay per beer?

Man: 

£3

Woman:
And how long have you been drinking?

Man:
About 30 years, I suppose

Woman:
So a beer costs £3 and you have 3 beers a day

which puts your spending each month at £270.

In one year, it would be approximately £3,240 correct?

Man:
Correct

Woman:
If in 1 year you spend £3,240 not accounting for

inflation, the past 30 years puts your spending

at £97,200 correct?

Man:
Correct

Woman:
Do you know that if you didn't drink so much beer,

that money could have been put in a step-up

interest savings account and after accounting for

compound interest for the past 30 years, you

could have now bought a Ferrari?

Man:
Do you drink beer?

Woman:
No

Man:
Where's your bloody Ferrari then?