The biggest advantage of macros is that you can make whole programs that can take care of a class of parts. Within each class of parts, if the only change is size, then you can make all the changes thru variables.
Macros are very useful but mainly it depends on your programming style. If you have high-end cad and/or do 1 off parts you might not see the advantage.
But if you hand code allot or like to make little programs that fit a variety of needs then macros are indispensable.
thanks
Michael T.
"If you don't stand for something, chances are, you'll fall for anything!"