We're all free loaders at some point. A logical question is why is post-secondary not covered like primary and secondary education? Post-secondary education of some sort is pretty much a requirement for most jobs these days.
The corollary is if it makes sense to pay for colleges/universities/trade schools, then why not for elementary and high school? I'd personally like to see some objective analysis of the status quo versus what the Quebec students are asking and alternatively if all education became unsubsidized, with costs and benefits included.
Post secondary education is at least partly paid for except possibly at some private institutions. What the students pay is only a portion of the cost. While I can see the benefit of us paying for studying medicine and engineering and trades. I am against taxpayers paying for someone to study things like french literature. I am also against us paying for someone to go to school just because they don't want to get a job.