Pinot Noir has risen to cult like status. It makes up the most impressive and iconic red Burgundy wines, it's in Champagne, totally loved by Americans, and South Africa and South America produce some pretty amazing ones too.
It has a unique character in that it produces light red wines with savoury, leafy, often juicy aromas and flavours. Made right, it can age exceptionally well, be very complex, and is very versatile.
But why is it so expense?? In a nutshell... it's really hard to grow and due the thin skins it gets damaged easily. You get less per vine than other varieties, and thus, you pay more per litre. To be able to make great Pinot, you have to have a great vineyard, and a great winemaker. It's why people love Pinot Noir so much.