You don't know who is useful for you. Person who loves you in time of need is your real friend. Person who don't help you in danger is your real enemy. Personally I love myself first then comes to my family and friends. I don't love who smoke whether your blood relationship or not.
Actually my mom and dad loves me more even without Interest.
There gives me support everytime, when i need help everythink then my mom and dad solved my problems. Personally i am very lucky for it (My mom and dad Alive).