I hope you'll reconsider and continue building your tree. The thing is, many people take a DNA test with no tree or a very small tree, and as a result, they aren't able to benefit from the features AncestryDNA has to offer. I worked on building my tree for at least 10 years, off and on, before I took the DNA test. It paid off. My tree is fairly robust and my direct line is well documented, so I feel good about it's accuracy. In addition to the records I have found on Ancestry.com that support and document my line, I have found great records at other free, online sites, such as familysearch.org. I have added to my tree copies of records, deeds, Wills, and vintage newspaper articles that reference my ancestors from the other sites. All of the work in building a solid tree paid off when I took the DNA test. Out of my 217 DNA matches at 4th cousin or closer, Ancestry was able to identify our common ancestors for 180 of them (leaf hints). Without a tree, I would have no DNA leaf hints. When Ancestry identifies a DNA match with another person, their programming performs a routine to look at the trees of both matching parties and attempt to identify who their common ancestors are. If you have no tree, this doesn't happen. So, I encourage everyone to keep plugging away at their tree. It's definitely worth it.