Is mining dead?

My rigs are still spinning. I find it funny how people say "my rigs are off until ETH value is at least 400$". Well with value increase the difficulty will also increase, also it's the best time to mine while the price (and difficulty) is low, you will be able to sell all your mined eth later for $400... Like in the old days you could mine 1eth per day with a rig, now you it'll take 6 months.... Mine as soon as possible, not when the price is high, lol...