Who in the world asks to be born?
Not you op! Not your parents! Not anyone!
It’s a nonsense argument!
But we are all here anyway and so we had better get on with it and make the most of it as best we can! And it’s far from easy sometimes.
It’s a mixed picture bc ultimately it’s a selfish act to have children, but one that involves a lot of selflessness if done properly. No one is obliged to have dc in a free society.
At the same time, you may not want to acknowledge it op, but your parents have, objectively speaking, done a lot for you if you have survived to adulthood and have been fed, kept safe, warm, clothed and your emotional, educational and financial needs have been met. It takes a hell of a lot of consistent effort, patience, love and money to raise a child nowadays.
Obviously none of this applies if your parents were abusive.
But if they have done their best - no parent is perfect - with love and good intentions, then I think you do owe them as much help as you can offer practically, emotionally and financially without undermining your own family.
It’s pretty hard being old. Your health and strength fail. Your friends die. You feel less in control of your life.
My dh and I hope to be as independent from our adult dc as possible and have saved hard so that we can buy in help. And we definitely need to exercise more to keep up our strength. Everyone needs to take responsibility for themselves as far as they can, but everyone fails at times too!
And we would never say “after everything I have done for you” or try and make our adult dc feel guilty. Nor would we expect them to do more than they are able, physically, financially, or emotionally. Who knows what the situation will be like when it happens?
But if there is love between you and your parents that is proper unselfish love, and not exploitative, where both parties care and want the best for each other, then I think you should both naturally want to look after each other! It’s not always easy. But proper love isn’t always easy either. It takes a lot of strength to properly love someone else.
And love isn’t an isolated emotion without context. Expressed properly; it’s a verb, and both parties have responsibility not to ask too much of one another, but in a crisis, I think if you love one another, then you naturally want to be there for one another.
Finally, just because something is hard, difficult and uncomfortable doesn’t mean you will feel better if you avoid it!