I don't use my honkin' big Shure A81WS indoors, but I do use my DPA UA0896 (or similar, if my mics came with them). My experience has been that every so often, even if I don't feel air movement indoors, my recording still suffers from air movement I'd not noticed (or couldn't possibly have noticed as I can't always stand in or reach the exact position in which I fly my mics).
So, as a safeguard, I now use 'em indoors every time. For me, skipping them just isn't worth the risk of losing (yet another) recording.