You've made quite a leap from what I said (travel, even extensive travel, isn't a pleasure reserved for high-income tech workers) to taking care of infirm or permanently disabled family members. Why not bring up 95-year-old diabetics? They certainly can't hop on a plane to go hitchhiking across Europe. There's always someone worse off, I never said _anyone_ can do it, but it's far less exclusive than Cthulu_ makes it sound.
By the way, children are a choice in most cases. If you decide to have children in your twenties, I agree, you won't have the same flexibility that I had. That's kind of the point of what I wrote: you can pick your priorities in life. Career and children are a popular priority, but that doesn't mean everything else in life has to be a nice-to-have that you can only consider once you have the house and kids. Orwell wasn't caring for a toddler while he and his wife were fighting in Catalonia.
By the way, children are a choice in most cases. If you decide to have children in your twenties, I agree, you won't have the same flexibility that I had. That's kind of the point of what I wrote: you can pick your priorities in life. Career and children are a popular priority, but that doesn't mean everything else in life has to be a nice-to-have that you can only consider once you have the house and kids. Orwell wasn't caring for a toddler while he and his wife were fighting in Catalonia.