Why on earth would someone say Linux sucks? Because they don't know how to use it! The people (like me) who have the working knowledge of it can tell you that by far it is the best platform for Expert users and users who need mucho power. Security-wise, once properly configured, it is hands down the most secure. I have had more Trojans and viruses in a month on Windows than I have had with Linux for the some 9 years I have used it.
People who put it down are not true tec's nor are they even worthy of installing it.