So I finally bothered to check wikipedia and find out what a "lifestyle business" actually was: http://en.wikipedia.org/wiki/Lifestyle_business

"A lifestyle business is a business that is set up and run by its founders primarily with the aim of sustaining a particular level of income and no more; or to provide a foundation from which to enjoy a particular lifestyle."

It doesn't sound like that describes your business exactly. But why do you care? Sounds like you're doing what you love, so whatever someone else labels your business is mildly irritating but essentially irrelevant in the grand scheme of things.

Care to share your URL?