Beer drinking

Subject: The conversation

This a conversation between a man and his wife. Please note that she asks
five or six questions which he answered quite simply, but then she is
speechless after answering only one question. l bet this happens more often
than not to most husbands out there:
Woman: Do you drink beer?
Man: Yes
Woman: How many beers a day?
Man: Usually about three
Woman: How much do you pay per beer?
Man: $5.00 which includes a tip (this is where it gets scary!)
Woman: And how long have you been drinking?
Man: About 20 years, I suppose
Woman: So a beer costs $5 and you have three beers a day which puts your
spending each month at $450. In one year, it would be approximately $5400
correct?
Man: Correct
Woman: If in 1 year you spend $5400, not accounting for inflation, the past
20 years puts your spending at $108,000 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 20 years, you could have now bought an
airplane?
Man: Do you drink beer?
Woman: No.
Man: Where is your airplane?
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