In general, no.
Germany e.g. changed the law from the necessity to drive right at all times to allow staying in a lane if and only if there are vehicles on the right side for approximately every 20 seconds.
If the road is empty, you are obliged to drive right. No exceptions.
It depends on culture, but e.g. in Germany it is not your business to dictate other people how to drive. The most important law here is the first law:
Wer am Verkehr teilnimmt hat sich so zu verhalten, dass kein Anderer geschädigt, gefährdet oder mehr, als nach den Umständen unvermeidbar, behindert oder belästigt wird. (People who are road users have to act in a way that no other people are harmed or endangered. They also should not encumber or pester other people if this is not strictly necessary.)
And yes, driving left without reason other than being comfortable is considered encumbering.