For that matter, I can honestly say "windows xp sucks horse dick". I don't currently use windows xp anymore, and haven't used it in years, so does that mean I can no longer have any opinion on windows xp? And if that is not the case, then why would it be the case for Ubuntu? Besides that, people may not always get to choose what OS they use. Some people may have to deal with OS's they don't like due to work, doing favors to friends, or any number of reasons.When you immediately attack someone just for voicing a negative opinion about Ubuntu, accuse them of trolling, dismiss their opinion... it definitely does not look like the words of someone who "has no attachment to Ubuntu".
The fact that you are so irrationally consumed with anti-Ubuntu hatred is something you should try to admit and accept. Doing so will not only make you happy, but also bring you wealth and riches beyond your wildest dreams.