Who will take care of me when i get old? - Nobody will. And nobody will take care of you too!
I think i'm gonna use this reply if i ever get asked this question. It amazes me how optimistic people are about a possibility that their kid will take them in or send them to a good nursing home. Adult kids kick out their parents and grandparents from their houses. They beat them up and there were cases of rapes done by disabled adult kids.
Yes, nobody will take care of me because i don't expect anyone to especially in this economy. Have they seen the prices for senior homes or visiting caregivers?! Also, i wouldn't wanna be in a nursing home. An assistant-living? Maybe yes. It's even more expensive. But i just wanna stay in my house by the river and be driven to the city whenever i want to. That's the life i might be able to afford if i don't have any extra expenses now. I doubt that i will buti might. You won't. Parents only invest in kids and hope that the said kids will return the debt later. No, they won't. Every adult struggles in this economy and they will only struggle more. You may get a successful kid though. He still won't take care of you becaus you sucked as a parent or because your kid sucks. Either way, we all might end up alone.