So essentially you're saying that you prefer to have to clean up after people who design interfaces badly?
My point is that an ability to customize quickly turns into a requirement to customize as program authors are too lazy to design their programs and instead leave the work to the user. Firefox is a very nice exception to this - it strikes a very good balance between these things, being configurable without overwhelming the user. The novice user is very well served by the default setup, the power user can with very few customizations get the features they want, and the obsessive configurator can dig through about:config to their heart's delight.