Which preposition to use with pointless

on Occurrences 2%

In many cases the puns proved quite untranslatable; while the poems, being parodies on well-known English pieces, would have been pointless on the other side of the Channel.

against Occurrences 1%

I may add that such shafts are specially pointless against myself.

without Occurrences 1%

I make these, as I conceive, necessary digressions, because a discourse on Moses would be pointless without them; at best only a survey of that marvellous and favored legislator from the standpoint of secular history.

Which preposition to use with  pointless