If you're keeping people around friends or family just because you grew up with them, or because you're comfortable or because it's just easy letting them be toxic, poisonous and absolutely not helpful to your growth you're doing more dangerous thing than staying alone.
I've seen so many people hold on to relationships and friendships not because it nurtures them or help them grow or inspire them but because familiarity has become an addiction. Almost like a destructive habit.
Time to bid farewell to all relationships and friendships that don't inspire. And if you're the jerk, time to walk away or be a better friend.