Is it too late for friends to apologize and patch up ? No, it's never too late;)
Is it really worth it to try to talk it out with a friend who seems not interested to clear up things at all ? Could give it a try once;)
Is it alright to forget friends ?
Yes, everything in the world changes or gets destroyed, death of relationships is inevitable, that's why sometimes I don't understand finding old friends on facebook! What's the point of having a 'friend' to 'add' on FB, say how are you once and then have no convos at all? Is that friendship?
These are just my opinions:)