Yes I use macros a lot for auto set of both Z & W zero offsets on a 2 spindle lathe, offset shifts, part transfers, Swiss style pulls on a non Swiss machine, automatic wear offset adjustments, auto threading cycles with automatic undercuts not included in a lot of solid models, a program that make any simple washer (takes about 5 minutes to program at machine) runs 5,6,7 etc at a time in each cycle, pulls stock out to make more, counts the total and stops when total of say 150 is reached, custom probing cycles, facing programs on vertical mills,the list of possibilities is endless. Now why you say? When you work in a shop for 8 years that has no Cam system you learn to use them effectively. Even now that I work with a Cam system I still find them powerful and very useful in the right situations.