I have a slider in a web page (similar to this one) to control the the duration of how long to keep an item before it is removed:
The range of values goes from 0 to 90, with the value 0 being used to mean 'never' (i.e. never delete the item).
Does it matter that the 'never' option is at what seems to be the "wrong" end of the slider? It feels more intuitive to me (although I can't verbalise why) that dropping the duration to zero means to not delete, but I can also see the logic that "never" is larger than any other duration and so should be at the right-hand end of the slider.
Which is less likely to cause confusion, or is there a better way of doing this?
Are there any examples of this sort of control elsewhere that I can use as an example?