what would being an adult without grandparents be like?

i only have one left and im pretty sure hes almost 90, he’s healthy but he is getting old now. im 15 so i do have doubts he still will be around when im an adult.

i only really have my mother and shes severely depressed and also has basically constant vertigo so i dont know what shes going to be like in a few years either.

it just sucks because my mother grew up with grandparents and loved it but i never will but maybe its not all bad. are they important when you grow up. they were for my mother.