So many reasons, and for the same reasons all the other companies do it. When you go to the gas station you notice most every body is plastic.
It's cheaper
More friendly to the environment (when it comes to making the plastic from recycled waste and recycling the plastic)
Less weight when shipping
Less broken product and mess if dropped
I'm sure there are plenty of reasons
Have Patience!
Identify support/resistance ranges to buy and sell.
Plan your entries/exits relative to risk/reward.
Trade in the direction of the trend.
Trade to trade well.
STAY Consistent, Consistency is Key!