Come on, you're being intentionally dense. OP framed your quote as a question, not a statement. They're not exploring nor judging people on whether or not they should be contributing to society even with no pressure towards it. They're asking the if they think they would, and how.

A "no" suffices. And in fact, is valuable, as it feeds the secondary implicit survey you allude to.

Personally, that's my answer. My public contribution would be in archival, I'd edit a lot of wiki pages. But it would be driven by my interest, not practicality, so it would be mostly useless to society at large. Most of my time would actually be consumed by personal stuff for my friend groups.