Why 95% lose in trading?

 Market can only go up or down. So 50% win is assured. Then why 95% lose in trading?

Reasons are a few

First 95% losers are not number of trade wise. But net loss wise. 

And that is because traders book profit early and book loss late. Fear Psychology does that. One big loss wipes out 5-10 profits. 

Second, even number of trades wise, traders lose much more than 50% trades (~66%) because they trade on common mass herd sentiment built on public forums like business channels, groups etc. 50% win rate is statistically true only if trades taken randomly without any external influence or with fixed rules.