Absolutely. They do it anyway, so why do I bother?

There isn't a year that goes by where I don't file my taxes, submit them, and then two months later get an email saying "we've audited your filing and you made an error." Sometimes it's that I get more of a refund that I thought. Sometimes it's that I have to pay more. So it's not malicious thing or anything like that. But either way there is no recourse to their decision, so what was the point of me doing it first in the first place?

If you know what I owe, or what I'm owed, just fucking tell me. And if I'm a financially responsible adult, I'll have an idea about whether or not they're accurate, grumble about it if their not and then move on with my life because they won't do anything about it anyway. (You know...the Canadian way)