>I would be willing to pay a subscription fee if that helps it sustain.

The really interesting part of this problem is the network value, not the individual value. The fact that "the network is valuable enough to you that you would be willing to pay" is precisely because of the value provided by the other nodes. Many of those nodes are present only because they do not have to pay. Demand curves are downward sloping but the value of the network is some function of the total nodes, probably the square of the nodes.