This has already been detailed in the FAQ's and in countless other threads by minors. Please re-read them.
It's about who in our society is LEGALLY responsible for their actions. People under 18 are not. While you may own up to your actions, you are not legally accountable for them. That is the difference.
There are many teams/groups who may allow you to play given your conduct. Another important thing is who can sign the waivers/insurance. As a person under 18, you generally can't. While these issues may have work around's for certain players, Airsoft Canada as a whole isn't about catering to the special cases, it's about giving the masses the correct information.