I don't mind creating admin pages since I started using dbQwikSite to generate them. I know I am giving away a secret, and its probably considered cheating, but for making Admin pages or other similar pages with List/Add/Update/Delete, its a big time-saver, especially if the pages are simple. It generates both ASP and PHP, which is great. It supports MS Access, MS SQL, MySQL, and many other databases.
I would say for me the most boring part of creating a website is adding content... and more content... and more content... and more content. I know its necessary, but my copy paste fingers start hurting after awhile.
On projects where I have a budget for it, I usually hire someone else to add all or most of the content after I have built the site's structure. They don't need many technical skills since I create an admin section for them to input the products or article or whatever content needs to go up.
And I am not a typist, so anything given to me must be electronic... or else the price quoted must include the fee for me hiring a data entry person. Typing is something that I am not fast at (I can poke keys fast when it comes from my brain, but when trying to copy from a piece of paper, I'm terribly slow). Plus I dislike it. I would say that is the most boring part, except that I refuse to do it. I know people who don't mind the extra work typing up all the content though, so it works out good.