No I don't. Unless I signed a document saying otherwise you should consider yourself damn lucky that you get to access my source code.
You also owe it to yourself. But hey: if you want to post sloppy seconds untested code on GitHub - consider yourself lucky that they let anyone in.
1. I am providing a public service, so I'll do my best to make it simple, complete, accessible, and reliable.
2. I've invested a lot of my precious time writing this code and am graciously providing it free of charge. Therefore, you should consider yourself lucky that I'm allowing you to use it at all.
In my experience, it's difficult for those in one camp to find common ground with the other. Group 2 tends to flourish in wild frontiers, whereas those in group 1 tend to do better in more established areas.
Many people are graciously letting people share in stuff that they themselves need to have. It's laughable to obligate the guy throwing the free picnic or donating his used couch to anything and similarly so for given code.