I tried for seven years prior to 1992 of trading with the trend in commodities to no avail, it didn't work for me, I got in too late or got whipped around too much. So I thought about the Commercials, they didn't go belly up when they went short at highs or bought the lows, so I knew it was doable.
After much backtesting, one simple don't sell any high or buy any low in commodities, but I went over decades of charts and I found that extreme prices at highs/lows were my answer but using approx of a decade of chart. And using options as a hedge works well.
So to say "character flaw", I think not Sir.
Of course if you are inexperienced, uneducated and too lazy, you will not do well, whether you trade with or against the trend.
After much backtesting, one simple don't sell any high or buy any low in commodities, but I went over decades of charts and I found that extreme prices at highs/lows were my answer but using approx of a decade of chart. And using options as a hedge works well.
So to say "character flaw", I think not Sir.
Of course if you are inexperienced, uneducated and too lazy, you will not do well, whether you trade with or against the trend.