I also am wondering why can't we use calculated metrics in segment builder. We actually are leaning more and more on calculated metrics, to the degree that we are converting our main KPIs into calcualted version of themselves that can be curated as errors/issue arrise. For example, if cart views were to be comprimised by a bot, we would want a calculated official version of *Cart Views* that we can curate and remove the anomolous data. From there any segments based on cart views need to get re-engineered to include the new calculated *Cart Views*. But today this isn't possible.
The arguments I recieved from Client Care are:
#1 Since the calculated metrics are based on the actual metrics, it usually is not required.
#2 Also, as calculated metrics allow segments, if segments allow calculated metrics as well, it will be a circular formula. This could cause problems.
My counter arguments to CC are:
#1 What about when the calculated metric is very complicated. And, if we planned to hide the root metrics in the report suite setting menu in favor of the curated version, then it would become impossible to re-create the calc metric at that point to import into segments.
#2 Understanding there is the risk for circular logic, but not in every case, obviously. And couldn't Adobe simply display a warning for any segment where an imported calc metric is colliding/circular?

Thanks, Jonas