
Since I am a lciensed real estate professional, of course my answer will be YES!
Even taking that into consideration, with all the changes that have come about since the real estate bubble burst two years ago, it is more critical than ever to have an agent to help you through the ever complex process of buying or selling a home. With more short sales, foreclosures and market uncertainty, you need someone who knows the market, the new rules and will work to protect your interests.
MSN has a great article that points out five major reasons to still use a real estate agent.

Single level living will be the preference of aging Baby Boomers. If you have a ranch plan to sell, the demand (read: asking price) for it could rise in the next few years. If you are looking to buy one, expect supply to drop and prices to rise.
If you bought a house after Nov 6 2009 and qualify for a Tex Credit, the process has become more complicated:
Where’s everyone going? I guess, it’s Texas.
Don’t wait around for prices to drop more. Prices have risen for 5 straight months.
Here are the stats for December for Lee’s Summit. The key stat here is that Pending sales went up by almost a third from 2008. This indicates that the Lee’s Summit market is on the rebound.
If you have been on the fence about buying your first home or moving up to a better home in Lee’s Summit, now is the time to make the move. The tax credit makes it the best time to buy.