I am 32, i grew up with my uncle, aunt and cousins (my dad and my mom were seperated while i was 1, never lived with dad, mom disappeared) . I never got hugs from them and never got kissed, they never said "I love you" too. But mind you, I am Chinese, and maybe it is just part of the cultural difference. :)
Yeah, im Chinese to think it is a cultural difference! me and my family are all close to one another and we would all go out of our ways to make each another happy etc...... yet we dont really show affection to each other by 'hugs' or 'words' after a certain age (childhood). Think they may seem it to be a unnecessary as we know we 'love' each other. But due to this i think we can sometimes be a bit distant and awkward in certain situations( e.g saying goodbye etc.), thus people may find me 'cold'