When buying takeaway for myself with MY MONEY, should i always offer to buy for other people in the house or not?

My family comes back with takeaway today and they brought for everyone apart from me, i would've happily put money towards it etc. They never asked me, even though they knew that i knew they were getting takeaway.

I admit that until lockdown i used to get takeaway's fairly regularly.

Anyway, after they came back without buying food for me i snapped back with a few sarky comments and then my mum snapped back and said that I never offer to buy her anything.

Part of me wants to think she has a point as i rarely do offer to buy other people stuff. The way I see it is that it's my money and i should spend it how i want, and yes i have a lot more money than everyone else in my house.