I often see reviews of edged tools with the comment "I have never sharpened it and it has stayed sharp all these years"...
Believe it or not, the factory edge is not intended to be the last sharpening ever done on the tool, but is a courtesy to the buyer. The buyer has always been responsible for sharpening his own tools, and in fact some better edged tools only come rough ground so that the owner can sharpen to their own specifications. Some manufacturers provide better factory edges than others, but all expect that you will get a file and sharpening stone and sharpen your own tools. Especially axes, which get used hard, should expect be sharpened regularly, even daily if heavily used. If you don't know how to sharpen, try googling "axe sharpening". There's a pretty good guide by the US gummint at:
Axes should be razor sharp so that they cut what they're pointed at and cut it cleanly. A dull axe is not a safe axe. The same goes for any edged tool -- knives, saws, planes, chisels, whatever. Only splitting mauls (which are not intended to cut, but to split) are meant to be relatively dull.
(That being said, manufacturers recognize that people today don't know as much about hand tools as they did 50 years ago and are providing better factory edges lately, mainly to forestall angry calls from new buyers, but the above still applies. If you need an axe, you also need to know how to care for it. Your emergency room physician will thank you.)