I wish my Mum had given me her surname. She almost died giving birth to me, requiring two blood transfusions, only for my bio father to disappear into the night when I was 10 months old. He was in and out of our lives and they eventually divorced by the time I was 3.5. By 4 I was using my Mum's name at school and socially, to me it didn't make sense to have a different last name to hers. Dad and his family pushed back 'what's the point anyway? You'll just change it when you get married' (nope, kept my name thanks). Legally changed it the day I turned 18 (I couldn't get my father's approval before then and at 18 he had no say). Best birthday gift I've ever had.