wellsh - as this is your first post to this thread, I don't think you can reasonably regard anything that has been said as being a complaint about you, or a refusal to help.
Just write down (perhaps in the "description" section of an event) where you got your information. The most important part of documentation is to be able to retrace what you found, if you need to go back to it. In your case, it could be something like, "letter from Aunt Bea, dated July 5, 2009," or "oral history from Grandma Smith taken at family reunion on August 7, 2005," or whatever). I suspect that much of what you know can be validated through outside documents (birth and death records, etc.) that you eventually will find and can add, as you have time and resources.
If you actually are concerned that others may think you lack documentation, you can always make the tree private while you work on it and then change the status to public when you think it is appropriate. If you make it private but searchable, anyone who has an interest in the same people can contact you and ask you questions.