You're right, last year's price increase means very little compared to the coin rush that's going to start once general public buy-in and usage takes off.
Supply and demand... Therefore: BUY BUY BUY HOLD HOLD HOLD.
The issue right now is the volatility because of the tiny market cap compared to any other asset, it's holding us back from actually using it the way it's intended to be used. China sneezes, coin goes crazy.
Luckily it also makes for a great long term investment, purely because people think it does and it's essentially the poster child for the first time humanity has solved the double spending problem on a global digital network.
Therefore, again, buy buy buy hold hold hold.
Crypto's here to stay, and BTC is the head of the spear.