If you are being paid for it and you feel the skills can translate, then yes it should be on your resume. I have put in on my resume and I will continue to put it on my resume. As it has given me the ability to deal with decision making and do it on the fly in a cool and calm way. It just depends on the profession and maybe if the skills translated. In certain fields I could see it not being a major help as you might need an education background that will be important to do a particular job. But I have been in sales and it is usually the thing that is talked about and has gotten me jobs. I have also been in management in a couple of jobs and it also helped me get jobs. And since I have been on boards and made decisions as an executive on those boards, I think it is always good to highlight that you have been in some authority positions as well. Most of all this is a personal choice, but it is the longest "job" I have had and I want people to know that. It is also a business and many aspects of the job have other benefits. I also want people to know that I am in demand and how it took to build that business.
Then again that is me.
Peace