I tend to enjoy debating, that's my only reason.
I believe liberalism is a mental disorder....
I tend not to believe that. If we are talking about a mental problem, I think you have to examine the individual. Not a set of beliefs we call "liberalism". Sure, a number of leftists are mentally deranged, weak, brainwashed or low IQ. Not all of them. A true Marxist will be more consistent in their arguments than Democrats and Progs. This is because they are not trying to "include" everyone in their group. They know what they are and what they believe.
For example, no liberal will define what a woman is because doing so would be proof we are all NOT the same and that runs contrary to their collective brain set and destroys any debate at the beginning
A true liberal or leftist with a core set of "left" values would define a biological woman and a biological man to be the same as what we conservatives would. A Marxist, for example, would simply declare that "all people, men, woman or whatever you think you are will be treated the same. They will use the same bathrooms, play the same sports fight in the same wars with no distinction", and let the chips fall where they may. Then, they would outlaw sex-changes and systematically execute "perverts". They will do this because, in a Marxist society, "sameness" matters, not individualism. And, trannies are too individualistic to be allowed in a Marxist society.