/click to me is like calling functions in programing. Once you set up the basics it becomes modular and you dont have to write any new macros.

For example my main macro is the following:
/console Sound_EnableSFX 0
/click MultiBarRightButton9
/click MultiBarRightButton10
/click MultiBarRightButton11
/click MultiBarRightButton12
/console Sound_EnableSFX 1
/script UIErrorsFrame:Clear()

The contents of /click MultiBarRightButton9 is the following:

/assist focus
/target frost tomb
/target chaotic rift
/target guardian
/use 13
/use 14

So its my base targeting macro. Any new toons or what not I just plug in the modules into the slots I need. Quite handy and it makes some fights a lot easier as you dont have to tab or click around trying to find a conditional mob for some boss fights.