Why everyone hate wikipedia?

Wikipedia is not hated by everybody. It is still a good place for general reference and there are good articles in it. At the same time due to its nature there are articles which are inaccurate. Even cross-checking on the Internet would not necessarily helps to clarify matters. The other sites on the Internet may be made by the same individual or group. As a result we still get a biased viewpoint. Whatever its weaknesses are, Wikipedia is still reliable as a general guide.