1 -It's the popular thing to do ...to be liberal. They understand the very basics if liberalism, but do not see the big picture.
2 -Are not paying taxes yet ...for the worthless users.
3 -Brains and experience. The "left" party was established for under achievers ...those who couldn't fit in, make the team, struggle with basic communication.
Most folks you see on the streets that always seem to have the time to protest something are liberals. They are bottom feeders who who need to do something to bring attention to themselves. Such as protesting they know nothing about or really don't even know much about ...just gives them something to do and they feel worthwhile.
Just like terrorist (no ...not calling liberals terrorist) lime to kill people for no reason, blow things up, etc., use religion and blaming the west for their ridiculous actions. They now have purpose because they are board, and/or were not accepted for some (obviuous) reason or another.
This is all why you will find the majority of conservatives working stiffs paying their own way. And this is why the majority of liberals are well .... Because they are in school, have not had to pay taxes yet, want to be lazy and collect from the government, etc.