BTC will always be a good for investment even though its current price of is unstable but it is still good for long term investment. I have invested a lot on potential crypto project way back 4 years. The same scenario this date where the value is decreasing. But holding it for a long time it gain almost 1000%. This is how the flow of a crypto market, my piece of advice invest what you can afford to loose according to your financial capability and don't buy if you don't have enough reserve funds.