Independence, no matter how much the PQ and BQ tout it, won't happen for a simple reason: By separating from Canada, they'd give up their right to suck from Ottawa's teat, and the gravy train would be stopped, and their idiotic "French-only" programs would go bankrupt.
So they find more practical to make a hollow statement on Quebec sovereignty, but they don't follow their word on carrying it out.
They're all parasites, French after all.
Your post requires several presumptions. I don't know enough about Canadian politics to assert their veracity, but I thought I would point them out:
1. Bloc Quebecois is a liberal (big-government) party.
2. Quebec gets more from the "federal" government than they give.
3. The cost of bilingualism is lower than the cost of separation.
I am a Quebecker myself would you consider me a parasite as well, given the fact that I am supporting my local conservative candidate.