Nobody is suggesting building these islands is mandatory, so your comment about 650million DC and 78 days "just to get started" is completely disingenuous. One or two habitats with the right combinations of dragons is a great way to mine gold, and yes, there is an ROI on that. You can pick just as many holes in a strategy of exclusively breeding and selling Magnetics 24/7. If you bother to read things again, I quite clearly point out how crazy the whole Panlong idea is... Magnetic setups provide a much more practical earning envelope. It's just a game, and this is just a bit of fun. Why don't you relax and try and have some?