The game of baseball at the professional level has stuck with wooden bats for years.  If they reverted to metal bats like they did in college and other levels players would be hitting the ball with ease over the fence.  

It is very crucial in my opinion that they stick with wooden bats because it is a tradition that should live on forever.  If they went to aluminum bats it would tarnish and destroy the record books from past players.  

I believe, however, they should outlaw maple bats because they are shattering like crazy.  The more bats that break means the more trees that need to be chopped down.  There are three types of wood that baseball bat manufacturers use and baseball player’s swing with and those are hickory, ash and maple bats.  Today players have gone away from hickory bats and are using ash and maple wood bats.

http://www.viperbats.com/webarticle6.asp 

In Major League Baseball today roughly 60 percent of the players are using maple wood bats compared to the rest of the league using ash wood bats.  Not only do manufacturers have to cut more trees down to make more bats for the players, but also maple bats have become a safety hazard as well.  With bats shattering like they are it is going to injure a player, and umpire or a fan in the crowd.  There were several known minor injuries last year.  

http://www.madehow.com/Volume-2/Baseball-bat.html

For example, Todd Helton of the Colorado Rockies shattered his bat and it struck a fan in the crowd and broke her jaw.  Maple bats in my opinion are not only dangerous, but are harmful to our environment.  Maple bats break more easily than ash bats.  Ash bats break but not as often and they don’t shatter like maple bats do.