this is your assumption, which first of all is only oriented on your personal profit and disregards the ecosystem and in addition you might even be wrong in this egoistic way of looking at things. because by not printing dec anymore and getting sps for it, the dec will be used up in circulation and you will inevitably have to burn sps to get new dec, which will increase the value of your sps from the reward. which might even make you more profit in the end.....