If it isn't now, then when? We should be wise and we should know how and when to buy bitcoins to have something to hodl. It is important that we'll maximize our gain through it. We should take advantage of the dip and just buy while we are waiting for the best situation of the market.
Of course you should invest now because after a long time bitcoin start increasing. I am watching the chart since morning and in my predict its journey is now started and we have to go with this journey.