There just isn't any good reason to play this game.
Charming in that Japanese anime sort of way.
Ys has all of the bad things about Japanese console RPGs, with almost none of the good. Graphics are weak even by the PC standards of the day. Combat is excessively simple (bump into your opponent!) and extremely monotonous. The plot is ok, but nothing that special. There really isn't anything in Ys that isn't done much better by countless other Japanese-style RPGs.
The Bottom Line
I would only recommend this game to very small children or other people who enjoy lots of repetition.