You can always buy some when the market is down, so why not invest now.
You know when they say you are running back into something gradually, that is practically what I am doing right now. When you want to be bullish on a market is simply when everyone is worried about it.
I have been expecting a possibility of a last dump in the market which would be more like the scariest one of all with the whole market doing into a state of panic, the weak hands dumping fast to at least, manage to hold on to what they have left and then missing out eventually. In that case, I usually ask, what is the point holding all these while, when you cannot just have a little patience left in you to focus on the future?