In Germany it is absolutely common to use scopes or redpoints.
Some people use open sights when hunting (driven) on very short distances or searching wounded game. On my Mauser I have a special open sight for fast shooting on fast game (wild boar), but only as 'backup'. Normaly I use a scope like 1,5-6 also on driven hunts.
In my opinion shooting with an open sight is a backup, nice sports or absolutely reqierd for military. Why should I forgo(?) an advantage with a scope?

@Deutsche Vortrekker:
I think that are two things you are talking about. Shooting with open sight and shooting without a bench.
Of course it is always good to be familiar with the basics...like shooting without scope or bench.