What gives Bitcoin its value?

Supply and demand?

Surely, as more merchants accept Bitcoin, more bitcoin gets sold for $$ driving the price down. The lower the price, the more people will panic and sell their BTC or trade it for goods, thus reinforcing the cycle.

I am getting to the point now where I am so tempted to sell my own BTC. I don't normally waver on things like this, I believed Bitcoin had a bright future, but my belief is shaken now.

I can't see anything in the near future that will increase the demand side of the equation....