>>* add 3 hours and 30 minutes to 4pm to get 7:30pm
>> 4pm + 3:30 = 7:30pm
>
>Why would you ever need to add time? I could use this in a report:
>
>

SUM(timeout - timein/3600)

But just to find out whens 5 hours after 2:00 am?

To make programming simpler and more high level. Just as we have a date datatype for simplicity. We could represent all dates as an integer representing the number of days since year 0 (or year 1). But this akward. Call me lazy.