>but still many people don't want sexual/life partners. However, everyone needs to eat and have some sort of shelter and access to health services.
First, only eating is really required, and it requires far less than a healthy diet. The rest of that you can find people who forgo. Also, there are some who choose to not eat and a subset of them do hold this choice until they die (which tends to be soon after and caused by not eating). Consider some monks who mummified themselves through strict control of their diet as one extreme example.
So what do we consider a need? If you'll live 40 years on gruel but 50 years on a balanced diet, is the balanced diet a need? What if the difference is 5 years and 15 years respectively? What if it is 3 months and 10 years and 3 months respectively?
>your worth as a person isn't -- shouldn't be! -- how much money you make or even whether you have a job
Then what should be? And what ever criteria you do choose to determine your worth to others, what of people who lack that criteria through no fault of their own?