Eh, you do you. But I'm guessing this is perceived as anti-social behavior and will hurt your career a bit. It's always good to build relationships. Results matter, but promotions always tend to go to friends. And the connections you make at one job will continue to pay off long after you cash the final paycheck from that company. Hard to think of any job where being social with your coworkers isn't the right play. Think of it like contributing to your 401k, or going to the gym. Putting in time to build out your network will make life easier down the road.