Everyone will tell you that having deep and meaningful friendships is a good thing, but that is an oversimplification.
You first need to recognize that those with whom you spend significant time will change you. Friendships are formative in relation to both your character and actions. Be selective in who you allow to have this kind of influence on your life.
Find friends who are different from you in admirable ways, and they will enrich your life as you begin to see things through their perspective and their character begins to shape you. Seek to be a the kind of person who makes the lives of those around you better because of the richness you bring to their lives.