If you're not a miner, the halving shouldn't have much effect. 14.5 million of 21 million bitcoins have already been mined. Everybody knows this event is coming, so it should already be priced in.
I don't believe that "it should already be priced in" is true. Going from 3600 new coins produced every day to 1800 is pretty dramatic, and 2012-2013 showed just what kind of effect on price that halving can have when we went from 7200/day to 3600/day.
I also don't think that 2013's two insane bubbles were driven by halving alone, but it definitely played a part, and it will play a part in the supply and demand of 2015/2016/2017 as well.