As a SMN the only macros worth using are a Spur/Rouse macro, swiftcast/garuda macro, and possibly a swiftcast/rez macro, anything else is a certain loss to dps. You don't want your dots on a macro, because this completely removes the ability to properly clip dots, which will ultimately cost you extra damage (An optimal dot rotation is something like Bio2>Miasma>Bio>Bio>Miasma>Bio2>Bio>Miasma>Bio>repeat Reapplying Miasma and bio2 with about 4 seconds left on the timer, Bio with about 2.)

I will agree, for some classes, especially BRD, macroing your abilities is very beneficial. SMN unfortunately, is not one of those classes.