I see a few options as to what could trigger mass adoption.

1. Non-US nations (people) adopt it out of necessity either due to the collapse of their currency or censorship. This will cascade over time.
2. US dollar collapse which leads to world wide depression (Mandibles type scenario)
3. Slow adoption of bitcoin as a functional savings tech(like gold) leading to a critical mass. Then people that get bitcoin fully gain traction using it as money. Most people start getting paid in bitcoin and spending bitcoin.

When? Who knows. I doubt its 10 years. Maybe #1 but I don't think the other two options happen that soon. Somewhere between 25 and 100 years is more likely.

I've written about this before. Most of us need to adjust our time preference and realize we are very early and not be little babies because everyone doesn't see it. Most of us such at selling anything that is new or different. Myself included. We just don't like to admit it.