And the question they never ask, is why is there a multi-year wait list? It’s like what steam said about piracy. It’s not a price issue, it’s a service/availability issue.
If undocumented immigrants are a problem, then document them. No need to sneak in if they can just walk through the port of entry and get a job.
For online discussions, it can be worth it. You might not change the mind of the person you’re talking to, but there are more lurkers than posters. Your discussion is for them.
I think if you aren’t the one debating, you are more open to differing opinions.