With current macroeconomic perspective in the whole world, my view is that crypto currencies might gain popularity and with it, increase in price. But, nobody can guarantee that in few years these currencies will still be on the market.
Every time is perfect for the investment in cryptocurrency, especially in bitcoins.
Right now bitcoin is getting increase every day. Most people wait for the price to get lower to buy more bitcoins.
I think it's a perfect time now. The price is pretty much low as compared to the last month's price. Just don't do panic sell otherwise you'll lose your cash