Spirit is, uhm, fine.
Along the dps-relevant stats it's the least important one, but you shouldn't underrate it.
If you can substitute 10 spirit with, let's say, 10 crit rating, do it.
If an item has about the same stats, but 20 oder 30 more spirit on it, take it.
Spirit is useful as a sidekick stat, which you don't socket (except 2 spell/spirit-gems for crit meta) or enchant (except 10 stats on chest) for.