The main reason why we should buy now bitcoins is for our own investing. It is really effective that you buy a bitcoin now and invest it in your wallet and wait many year and see the difference.
Bitcoin has gotten its investors over 500% return since 2013 till date. According to the economists rate the best investment for 2016 and 2017. If you are an investors the best time to invest in bitcoin is now as you can just buy and hold until the price get to ware you want it.