Want vs Need

People never want what they need. 8 glasses of water a day? Fruits and veggies? Someone who reciprocates your emotion. Why is it that people always complain about being treated like shit but as soon as someone treats them good... they don't like it. Granted if he's telling you he loves you after 3 days it's game and he's trying to get the panties asap. But if its been a while (whatever a while is to you) and dude is consistent (because most mean aren't) HE CARES. So what do people really want? We all say we want someone who loves us and treats right but when we find ti we dog it..