It's a balancing act. It's good for people to have some bounding time with the people they work with in a non work environment. It builds empathy across individuals, teams, and departments which makes resolving conflicts easier. Work is a big part of your life and there's nothing wrong with building strong long lasting relationships with your co-workers.

On the flip side, work is a big part of your life and it shouldn't be 100% of you life. It's good to have relationships and commitments outside of work. Finding this balance is hard and different for everyone.