I spend dozens and dozens of unpaid hours a month in my free time developing open source hardware and software and give the schematics away for free. That dedicated enough for you? You have no idea what goes on in the personal lives of each and every member of a forum, and you're painting us all with a broad brush right now.
I encourage others to reply to this comment on what it is they contribute to their cause. Because I'd be interested to hear that. On the Internet, we're just words on a screen that are easily categorized onto groups of people. But people are individuals, everybody has a story.