Theres times when im frustrated with the drop rates but I honestly have to say I disagree with you.
I work hard at this game and Im not the most lucky guy on the planet but ive been rewarded more than enough for all my hard work. If you dont know what content to grind based on your current gear or character choice then thats a whole different issue in my eyes. But at every stage of the game I have experienced so far there was a place for me to farm that felt worthwhile.
If youve been farming for weeks nonstop and still havent found any somewhat valuable items then you are certainly farming the wrong place or with a character that isnt good at farming or in solo games where drop rates ARE actually terrible for certain worthwhile items.
If you want i can take a look at your gear and try to make some suggestions about where to farm or what to try to improve.
Have a nice day, hope this post doesnt offend you.