Straight from the horses mouth.
Check out this Forbes article, Why you need a travel agent, part 1, and decide for yourself! Source: Forbes, Larry Olmsted, 2012
There are many, many good reasons, which I will explain. But the bottom line is that they know more than you do, they are better connected than you, they have access to benefits you can’t get otherwise, they can often beat any other prices available (even online, yes), and after you have planned everything, they provide a safety net during your trip that you simply won’t get by booking yourself or buying insurance.
Having a top travel agent can also make you an instant VIP – free room upgrades, hard to get restaurant reservations, cutting lines, access to otherwise closed stores and exhibits, private guides, and cheaper – often much cheaper – premium airfares.
Here’s the best part: even though most top agents charge fees, in almost every firsthand experience I or my friends, family, and acquaintances have had, travel agents have saved money, often a lot of money, thousands of dollars, and in every case, more than paid for themselves.