My follow up to my other thread...

[robvalue]

That's called the tu quoque fallacy. It doesn't make religion any less ridiculous because atheists sometimes fall foul of logical fallacies or emotional reasoning, especially in seperate discussions. Most atheists don't claim to be infallible. If an argument is invalid, then feel free to address it specifically.

It's a common response to criticism, which is worthwhile mentally training yourself out of. It's better to first address the argument at hand, and then later move on to any recipricating arguments if you feel it's necessary. (This is advice for everyone! My first thought when I'm criticised in real life is often to tu quoque, and I have learnt to mentally cross it out as a fallacy. It seems to be some sort of natural defence mechanism.)