But building connections over more permanent parts of yourself will last more than something that is likely to change every couple of years. Yes, losing the thing you connected over is going to make it so only the best friendships last, but that's just it, you can lose work just like you can everything else. Do people who -don't- go to a bar regularly to drink necessarily have limited social lives? No. Well, same with work.

Work actually makes it -harder- to really connect with people. The norm is to keep personal stuff personal; you don't bring up the difficulties you're having with your SO, and they don't give you advice or commiserate.