If I were to ask you what year it was, what would you say? 2000? Are you sure? If you said 2000 CE, you'd be right. But 2000 AD is historically inaccurate. The new "Common Era" system is much better, for two reasons. The first is due to political correctness. Using the common "After the Death of Christ" and "Before Christ" system is offensive to all non-Christian religions, and therefore is not viable in today's global economy. "Common Era" and "Before Common Era (BCE)" are much more socially acceptable.
Point two is wild inaccuracy. It's a not-so-well-known fact that the individual known as Jesus Christ was born in the year 4 BCE. Given that he was 33 when crucified, that puts the date of death at 29 CE. If we then bump the year 1 AD to 30 CE, that changes the current year from 2000 CE to 1973 AD. Bell-bottom lovers rejoice. Also, the year 5 BCE would be one year before Christ's birth, so therefore is 1 BC. So, with 1 BC in 5 BCE and 1 AD in 30 CE, that leaves a 33 year gap between 1 BC and 1 AD. The year 0 (which currently doesn't exist) was over 3 decades long? I don't think so. CE and BCE are so much less confusing than the old AD/BC system. Coupled with it's appeal to other cultures, and the fact that we don't really have to change anything, it's the perfect system of reckoning time.