The www can look better for shorter domain, however some people may argue that it looks old fashioned. You should however consider very careful whether to keep the www in your domain not only for visual reasons but also for SEO. If your site was a domain authority then removing the www could have
a negative impact on your rankings. Most developers should be advising you to keep the www if you have been using it for a long time already.
If you do decide to remove the www then make sure you set up a 301 redirect and you will not lose much link juice. Rankings can get erratic after migration but its difficult to show any resources on whether this really happens. (Google tends to keep secrets quite well). Yahoo and Bing don’t handle 301’s as well and they still are important sources for traffic.
Do you really want the extra work?
Actually there is no reason to drop the www on an existing blog because it just leads to extra work because old links might break. Check out this link on MOZ to find out more about this.
You should definitely use www if you are using a load balancer and need a CNAME point and if you are running an app with several tools. Or if your SSL issuers don’t issue a single cert for both www and non-www. Symantec is one such.
One tip I do want to give is if you are using Google Webmaster Tools then please set up your preferred domain to the site you are using.