Of course there's always ways around things, but browser vendors have to (unless in specific cases) cater for the general public who don't know about personalisation. These are the people who need safe defaults most.
As power users, we tend to ignore the power of default settings. Their values have to be chosen carefully because only a small part of the public are even aware of them.
Several commenters here seem to imply that they shouldn't be the ones personalising their browsers. Turns out it's the other way around: they are the ones who know how to personalise it, whereas defaults should be about users who don't know how to do it.
As power users, we tend to ignore the power of default settings. Their values have to be chosen carefully because only a small part of the public are even aware of them.
Several commenters here seem to imply that they shouldn't be the ones personalising their browsers. Turns out it's the other way around: they are the ones who know how to personalise it, whereas defaults should be about users who don't know how to do it.