I don't deny that a lot of things I like have major failings. Several of my favourite movies that I watch again and again I will be the first to admit are very dumb (Air Force One, Face/Off) but I don't feel a need to justify my enjoyment in something.
This relates to just about everything, ever since I turned 18 I realised that being an adult means I can do what I like to a large extent, and if that means acting childish, then so be it. Only young and immature people think that adulthood is about acting in some warped version of 'maturity.'
But no, i don't deny the failings of anything, or anyone, including myself.