That is very true, Cocksie. None of us can say with 100% certainty that our tree is accurate, it is just as accurate as we think we can get it from the information available. Just one little slip up by an ancestor along the way could mean that, unknown to us, we end up following the wrong father.
Genealogy is supposed to be a hobby and a hobby is something you do for fun and enjoyment. The day it makes me really cross, annoyed, upset etc is the day I stop doing it. I have now reached the stage when I know that nothing said on here, or other genealogical forums, will change the minds of people who have have wrong information on their trees. After all those people are so convinced they are right that they probably don't participate in forums, or if they do, they don't think what is being said applies to them .