What is it about forex that really grinds your gears?
I'll get the ball rolling...
When you've been in a trade for 2 days, patiently waiting for it to reach your TP. You watch and wait, eventually it gets within 5 pips of TP then, Bam!, 50 pip drop in 2 minutes.
Just happened to me now, if I had a dog I would probably have kicked it. Grrr
Another thing is spreads, I once also traded with a broker who manipulated spreads, I think one should trade with well known brokers such as FreshForex, FXCM and others to avoid such problems