Yeah Rob - don't lose heart. It happens to us all, little feedback, etc. Don't worry yourself with it, just not worth it. You do good work, make it for yourself first and foremost.
Sometimes people can't be bothered to download tools cos there isn't an initial hit, and people don't know whether they want or need it (unless it does something obvious like build terrains or lightmap levels).
Also, people don't have much time, so downloading a demo and looking at it for a few minutes is do-able, and then they can go off and think about how it is done when they are on their way to work etc.
Sometimes people can't be bothered to download tools cos there isn't an initial hit, and people don't know whether they want or need it (unless it does something obvious like build terrains or lightmap levels).
Also, people don't have much time, so downloading a demo and looking at it for a few minutes is do-able, and then they can go off and think about how it is done when they are on their way to work etc.