Although 3-D charts might look fancier, human factors studies have proven that 2-D charts are easier to read. This is particularly true for bar charts, where the user might be required to determine the value of a bar by comparing the height (or width) of the bar to the y-axis (or x-axis).
The 3-dimensional top of a bar makes it much less clear what the real value is. 2-dimensional bar charts avoid this problem. So our advice is to do without the “fanciness” in this case, and stick with a chart that will provide faster insight.