I invested at the worst time possible, and I am still at a small loss.
It confuses me when I see people saying that still. Even if you invested at the peak before 'celeste' won 4k BTC from the site I would expect you to have been back in profit some time ago. Here's the chart of site profit over time:

The chart doesn't show how the bankroll size has changed over time. It's possible that you took a large share of the losses, and a smaller share of the subsequent recovery, but even allowing for that I would expect you to be back in profit by now.
Did you reduce your investment significantly at or near the bottom? Because that would do it...