Getting your DCs as high as possible as fast as possible is nice and means you are less likely to waste turns wiffing with spells/wasting slots. I wouldn't say its necessary but I would want to be confident that what I was getting in exchange was worth it.

Quote Originally Posted by Stygofthedump View Post
Would you take a feat like magic initiate bard for healing word instead?
If this is a flavour/roleplay thing you may decide that was worth it (I'm not sure I'd ever do this over multiclassing) but in terms of straight optimisation I would take +2 Cha over this 100% of the time.