There's some things missing from the poll:
What's your salary without the cert
Do you feel that not having one is a hindrance
Do I give a **** about Linux certs
I have a fairly good feel for the Linux admin job market right now, and I'm finding that I won't be paid more for a cert. I will be paid more for my experience.
Why get a cert? It has its place in some instances, such as no production Linux experience and gunning for an entry level position. The other I can think of is if you're a consultant or field engineer who's employer or you yoursef need to market your talents. Some clients want to see that when a team is built or a consultant is brought on for a project.
Downside is maintaining the currency of the cert. But I say that once you get your foot in the door and get the experience, omit the certs so they will not hinder your ability to get the next gig, unless you enjoy maintaining them. Experience matters most at this point, with measurable results.
I'm humoring you, though