Should I host support forum on wordpress.org or my own website?

All my support forums are on WordPress.org, but I do all my development on GitHub and that has led to a few support issues filtering in to the issues stream that are support issues and not bug reports. I also got a handful of people commenting on my blog for support, but I closed all the plugin-related blog posts. I disagree that a forum is necessarily better. I love digging through forums, but most users won’t.

I don’t see why email is not manageable. In fact, some companies are using services like zendesk to handle support completely via email.