Think about it this way. You mine Bitcoin, and you get some Devcoin for extra. No strings attached. They're merge-mined, after all.
Now consider it from the standpoint of a content creator rather than a miner (not that these are mutually exclusive categories, of course). As a content creator, you build or write or produce something and you are PAID for it in time. That's a jaw-dropping improvement over slaving away for no pay whatsoever for something.
TL;DR: Miners win since you mine Bitcoin and get some extra Devcoin. Creators win since they get paid bounties for their efforts. If you both mine and create content, you win even bigger. The coin basically supports its own infrastructure in this manner.