If you have spare money to buy Bitcoin then go ahead and buy, price of Bitcoin has always been like this unpredictable.While others are raking in some profits like tose whou bought Bitcoins at $940 USD yesterday, others are still asking if its a good time to buy Bitcoins and missing the train.
I think that they are trying to get good profit by keep on trading it, mean while other think that it is to high to buy because they are planning to do this on a long term and not all people can suffer the loss after they spend some of their coin here. Actually it is not a must that you need to buy it though, you can get it from some works too
There are no spesific reason why you need to buy bitcoin for now because it is not a must, if you believe the price will be higher in a future then you should try to buy it slowly for now but if you are not believing it then just do some jobs to earn some coi