it's never to late if you invest right now, the dip has come and you should grab this great opportunity, the value last december 2017 almost hit 20k usd and the value right now is 7k usd, see the difference its so big, that's why buy bitcoin now, and also ethereum it hits 1300 usd last december 2017 and the existing value is 392 usd. what i recommend for  you is to buy top altcoins on coinmarketcap for much safer investment. grab your bitcoins and altcoins now