I suspect I'll be a little lonely voting for Friends, but I always pair it with disguise and/or alter self, at which point it's dead sexy. For 3rd pillar play anyway.
I think every Wizard should get it as a matter of course and on top of any other cantrips. It feels like all the stuff a Wizard would learn how to do as an apprentice.
Well it can't be used to inflict damage so its fine.
Oh hush.How about grappling?
I can't vote for anything that gets used 345,235,362,435,435 times every gaming session, every time, for every action, in every situation. So guidance is so far down my list of "best" anything that it will take it centuries to crawl back up. (Or half a century, if everyone is casting guidance constantly for 50 solid years. Which seems to be the case.)
Real mages say "presto."