I would argue there are facets to many people's life that they leave "at default" because they "don't care enough to fix it how they want".
Take random Linux User XYZ; They still have to nudge their front door to get it open after unlocking, because they're not a home improvement afficionado that wants to look up door repair videos on YouTube and attempt to put a stabilizer of some kind on the hinge. Or, they might accept the terrible interface in their car because they don't know of easy ways to get it replaced with something simpler. Or, they don't have their money invested anywhere because they don't like/trust researching investment tips.
For us, it's just that computers are something we'll always tune to our preference. For others, it's other things.