Yea, buying aggressively is not wrong just that some folks always get it twisted, buying aggressively from your discretionary is not wrong but one thing an investor should not do is to be over aggressive even though it is from their discretionary because when you are over aggressive with your discretionary you will buy more than you are suppose to... and at this point in time it becomes wrong and bad because you are now going beyond your elastic limit hope you know what this means in strength of material.
If it's for the purpose of profit orientation I don't see any wrong with an investor who buy aggressively as far as he stays within his financial balance by not using all his income for investment purposes there is nothing like over investment in a business that you are sure of return on investment