I too have regrets about things I never did with my parents when they were alive. I think the biggest one for me was not sitting down with my dad and letting him know how much I admired him and also thanking him for all his efforts in raising me. He was - like most of his generation - not good at sharing or receiving emotions and could be hard to approach but I wish I had made more of an effort before his death. It is good that we can carry fond memories of them with us though.