The amount to risk should be tied to the frequency and degree of system-related drawdowns. No one is right 100% of the time, and too high of a risk would wipe you out with variance, even if your system exhibits long term profitability. Low risk enables you to survive moments of bad variance.
Surely, when I have long-term trades, I never risk so much. But some risky and short-term ones have brought good money to me, why not? I understand clearly that if I lose it'll be only my problem. That's why I don't do such tricks very often.
Oh, I see. I thought you are just another newbie who's going to blow his account in the nearest future Sorry, man! Probably, you are just more risky than me, cause I can't allow myself to face such big risks in my everyday work
That's what I do, for the most part, and I am pleased with the results. I see no reason to change it.