why do you have to build something that other's want? I don't understand this HN mentality here. You can build something that will net you money without others,

why do you have to build something that other's want? I don't understand this HN mentality here. You can build something that will net you money without others, or it doesn't even have anything to do with money like an open source project. Too much concentrated in the virality of things imo