I think its to caiter to the female audience Sirch. Women are more likely to watch a vampire film if said vamp is good looking and has a somewhat sensitive side. As far as romantic vamps go I think Ann Rice did it best. Her vampires were a good balance between clasic and romantic.
People should not be afraid of their governments, governments should be afraid of their people-"V"
"I once knew a man who took off all his cloths and jumped on a cactus. When I asked him why he did it he said it seemed like a good idea at the time" (Steve McQueen, The Magnificent Seven)