Just as an aside, the thread doesn't have to be about things that won't get passed down because you don't have siblings or children. It can also be stuff that you just won't continue yourself.
I can relate to the food thing that a lot of people are talking about. I've been consciously trying to cook more Indian food and I often find myself calling my dad to ask for cooking advice. He loves it. I've also been learning recipes on my husband's side because they have favorites that have been passed down and his mother and grandmother are both fantastic cooks.
There's a woman who I'm not actually related to but is like a grandmother to me, and she has the most fantastic recipes in the world so I've learned much of my cooking from her. I'm happy to pass down what she has taught me. Before I left Illinois, I made sure to learn how to make
rosettes from her. She has an iron set that was passed down by her husband's grandmother or great grandmother or something insane, and her own children and grandchildren never learned from her. So I was happy to.
There are a lot of religious and cultural traditions that end with me. I don't speak Bengali, so there's no chance that I would pass it down. I don't know what my kids would know of Indian culture since I am far removed from it in many ways. My husband is atheist so I doubt we'll be raising any Hindu children.
Some of the Indian stuff I feel like my brother will pass down to his children, since he is very traditional and so is his wife. But there are also things unique to our culture, the Bengali culture, that could easily end up being lost.
It makes me sad sometimes because there have been many beautiful, enriching things in my upbringing. So I do make efforts here and there to keep things going and studying Bengali is an ongoing project for me.
On the other hand, I've learned a lot of things through my in-laws and I think it's pretty awesome to be able to pick and choose from the assortment between our two families. There were a lot of things from my childhood that are better left behind, and there are things in my husband's background that I think are really valuable. And ultimately I think that it's fine to have someone's background be unique to them; if we did have children they wouldn't be Indian so why would they need to have an Indian background?
I also put a stop to all that doctor nonsense. Well, my sister's a lawyer, but the rest of them are all doctors. We need to branch out!