I don't think most people would describe their relationship with their parents as a "best friend" type relationship. It's not that surprising you don't have muc

I don't think most people would describe their relationship with their parents as a "best friend" type relationship. It's not that surprising you don't have much in common with them. How many other friends do you have their age? If you don't actually enjoy talking to them, I wouldn't frame it as an "obligation" or "duty", but whether you care about them. Especially as they get older, they may need someone to look out for them. For example, I had to call my parents almost every day for two weeks to convince them to take COVID-19 seriously. Normally I call about once per week. Also, try putting yourself in their shoes and imagine what it's like to raise a child you love more than anything in the world, and have that child grow apart from you and want nothing to do you with you. I imagine it can be heartbreaking.