From what I can see…
STORJ is an ERC20 utility token that initially was just a convenient way to pay SNOs something back when the project started with nothing: and it avoided problems dealing with fiat worldwide. Basically how almost every crypto-related project starts 
.
Today about the only reason you’d buy it is because it saves you 10% off your bill when paying for space. It’s not a coin you’d hold for price appreciation, and it’s not tied to the profitability of Storj-the-company. (I mean if the company starts making serious cash the token isn’t worth more: but obviously if the company went out-of-business the token would die)
Man… I really hope Storj-the-company doesn’t start adding DAO features: those seem to be one of the fastest ways to kill a project. Letting random people make important business decisions is a disaster 
It’s an open-source project: so anyone can run any piece of it themselves: and there are currently over 24000 SNOs on the network - is that decentralized enough? (sometimes I can’t tell what people are really asking about when they mention decentralization)
TL;DR; The STORJ token gives you a 10% discount on Cloud Storage. Don’t buy it hoping the price will go up.