Everyone has their own reasons for going to a movie. Due to that fact, it is not unreasonable for many people to have widely diverging opinions on any given movie. Sometimes an opinion can be easily skewed by the expectations someone has for a movie.
Example; If you go to see 2012 expecting a soul searching, in-depth perspective of life on our planet and what it wrought to bring down such a reign of destruction upon itself, you would probably conclude, "That movie sucked!!". On the other hand, if you went looking for a special effects extravaganza with a really shallow story, then you might have enjoyed it.
There is no right or wrong here. It is just an opinion based on that persons own perspective. Someone claiming someones opinion is wrong is just another opinion that carries no more weight than the original opinion.
In my opinion, the question of "Worst Film Ever" cannot be answered by anyone that has not seen every movie ever made. Then you would need some number of those people to be able to get something close to an accurate assessment.
However, "Worst Film you ever saw" is something everyone can have an answer for. However, those answers will be based on what movies the person has seen. Whether it is 10 or 1,000 films seen, most people will have an answer to the question. Just because someone does not like the answer, does not make it a wrong answer.
