>>>What do you think about age? Is there a simpler way to find person's age in years?
>>
>>(val(dtoc(date(),1)) - val(dtoc(m.bDate),1))/10000
>>
>>could be used for years.
>>Cetin
>
>How accurate it is? Can I rely on it?

How accurate is your upper limit of 120 years? :)
I think even following will be accurate enough

(YEAR(DATE()) - YEAR(m.bDate)) < 120