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Why would people hold the token instead of spending/selling it (velocity problem)?
Because of speculation and fear of losing is the reason why many people buy and trade token utility. People who usually opt to purchase the Utility expects that the token coin holder will get the positive effects of the project.
Well everybody is hoping for the mainstream adoption of cryptocurrency and hope it will do. When that happens, enormous profits can be made just by holding it alone.

That's something that a lot of us around here think about the market. Once it gets mainstream the market should rise again.