What are the dangers of having a gmail email account
Everyone has a personal profile with the government, Facebook, Google, and you name it. this has been happening for the last couple years. as for whether your information is safe from people other than those holding it, it depends on what hackers are working on and how the company has worked to protect their data (which is ultimately information on you). Google is among the best companies in the world for data protection. they have to be. look up googles safety record and you'll see that where large companies like Sony or even the US government have had major compromises in recent history, Google has not.
Because of this I trust them. if you still wish to remain safe, the best thing to do is to control what you put up online. dont send sensitive information via email if it can be avoided.