It's fine if you want to turn over your vehicle every three years.
'Modern' cars are not fixable - even the specialists tear our their hair on some cases and give up completely.
Classics are rising steeply in value for people who want to own and understand a piece of machinery for its own sake. Much of modern automotive history will disappear into the maw of the crusher because irreplaceable, irrepairable parts render them useless.
more like eight years, which is not a bad deal.