Until when will you support your family

This depends on what country you live in and how you were raised.
Some families believe it is the ultimate insult to your parents if you don't support them or give them something whether monetary or material when you're able to work and earn for yourself.
Personally, I would help but I would not go over board with it in the sense that I will give off more than I can afford.
I dont think that parents should obligate their children to give them money but because I do believe in taking care of my parents, I do support them. In my case, it is not something they force me to do. It's something I want to.

I think if you have financial capacity to do,you have to help them. This is a family needed to be done, and no reason to say. Of course, if your economy and does not allow you to help them, you should make it clear to them that they will understand you.

in my opinion, each new couple from the first time before they taking commitment to get married, they should make a consideration about how much they allocate their money and how long they will support their parent and their relatives financially

for us, we've agreed to give some of our salary/income to both of our parent with the same amount fairly, but for siblings who already had a job or in an adult/productive age, we give nothing. just for our little sister/brother that still in school/college might be we will give them some money to support their school until they finish their school and get their own job..

I think I would support my family my whole life as a way of thanking them for bringing me into this world, taking care of me and for always being there when i mostly need them. My mother stop working because of me, she took care of me when I was pregnant even though I don't want her too but you know mother is always a mother. Parents has also an ego not to accept support from their kids that's why I am always saying to my parents that it is a gift from us. To my siblings, I don't need to support them really coz they already have families. I only lend them if they ask me to especially my brother. but of course in the end I don't ask them to pay me.