Humidifiers: make or break

[Bulbofett]

For those of you without the privilege of a greenhouse (I'm extremely jealous for those of you that do btw) how necessary, or beneficial do you feel humidifiers are?

I have considered getting one this past week since humidity levels in my home have drastically been reduced to 20-30%. My only drawback is that I don't know if there is really any much benefit to getting one. 99% of the time South Carolina has enough humidity that it feels like walking around in pea soup. January and February are really the only months we get a break.

So hit me with your advanced knowledge on humidifiers and their effect on orchids.