What actually matter is not the actual price, it's the trend.
If the price is stable or rising, the adoption increases. People and businesses get more confident in bitcoin and start using it. More miners start up their gears.
If the price is falling, people get scared / suspicious and will go away from bitcoin.
I also believe in that. It is the trend that keeps the users going. Bitcoin has been on an increasing trend and I don't see it going down anytime soon. Someday we will reach point that bitcoin and digital transaction is everywhere.