Not sure why I’m bothered by this!

Was at my in-laws for visit today with my toddler kids, outside in the garden, and my FIL at some point came out and asked if the kids want to drink, I said just water please. Then him and my aunt-in-law started saying why not diluted apple juice because it’s healthy. I said, it’s sugar and the sugar intake for the day has reached their limit. (Had some butter cookies, ice cream and blueberries) then they proceed to argue with me that it’s healthy fruit sugar and I responded it’s still sugar!!! And earlier my MIL and I, have plans to take my 3 kids swimming next week and offered to bring my niece and nephew with. I said 5 small kids is too much to handle. That all got me so worked up, I went home got emotional, my hubby said I’m taking it too much to heart and we need to distance ourselves a bit from them.

Why do people in the family have to argue about how to parent my children??? And my need to justify my actions! I’m also mad at myself at this point