I think you can also add a bit of "love" and kindness to this as well.

At the end we are human beings, and if we are kind to eachother, we incentivize the other side also. So being a user, you can also take part in, with not only joining, or not.

If you just join or not, the progress will be slow.

The more we work together,  the faster we can be.

Maybe I am fully wrong.