Lately I've been lurking the forums and saw some discussion on macros, their uses for different classes, and their lack of ability queue. I've been using mouseover macros for healing since I started in 2.0, finding it more streamlined than clicking a person then pressing a button. I've never rarely had a problem with it (sometimes its an issue when I use a macro to switch to/from my DPS hotbar and I'm over eager) but I'm curious: is this a common practice, or am I hindering myself by not taking advantage of the ability queue?

Thank you for your time.