I feel your pain as I have well over 200 languishing in storage never to see the light of day!
If I hark back to yesteryear when we had all about run out of space to actual place habitats because of lack of space a Storm8 person said we would always be able to display our dragons. Now it is a choice of keeping them in storage or buying very expensive Stable Upgrades, I have refused these as at 750 gold each, is just another money grab from the developers!
I find it rather interesting that every time a player buys gold on sale for a top or to buy a dragon, if they realise Apple takes 30%, hence increasing the need for developers to up their price for profit margin!
If I have to start selling dragons to play this game, then I might as well give up playing!