Forum Moderators: martinibuster
If you need to refer to data in those channels at a later date, it would not be accessible in the future if they were deleted. For example, you decide to track Christmas-themed pages over the months of November and December with multiple channels. If you deleted those channels, you would be unable to refer to those channel stats at a later date (say, next October when you are pushing those holiday themed pages again and wanted to see what performed the best for you). So I can see why they can go inactive but are not deletable.
<added>What are you finding cluttered? Having them at the bottom of the custom channel list on the report page? I know if you are quickly trying to select all channels to view the channel stats of all the channels at once, you need to find the end of the active, or else you are adding all the inactive into the report as well (although they do not show up in the actual report, since there are no stats for the inactive channels). Or having to sort through them in the channel control panel area as you activate and inactivate specific channels?
</added>