Perhaps you are thinking that your uncle or friend can do as
good or better than most pro photographers
at a greatly reduced cost.
Well, you are partially correct as we have seen horrible photos
(even in the NYTimes & Boston Globe) taken by so called "professionals".

But click here if you want to see the difference
between a pro photographer &
a beginner who probably will miss a lot of shots at your event
that are gone forever and will not be able to be re-done.

And the missed shots; will you be able to show your (future ?) family?