WRT socializing, we definitely have norms about controlling the drive to socialize, but I don't know many people who advocate complete isolation.
Similarly with sex. What you characterize as a "you can't control biological impulses" position usually specifically targets abstinence - that is not a fight you can win. But those same people are often totally in favor of more limited control of the sex drive. Laws against rape (statutory or otherwise), norms against romances on the workplace or military service where a power imbalance exists, norms against just plain moving too fast with someone new - these are all very broadly supported.