He is not being rude but rather blunt. Bitter medicine. You fail at socialization and blame the world. You never blame yourself and your negative attitude. You never progress and choose to simply isolate yourself instead of difficult and challenging self-improvement. This guy isn't being rude he is giving you the proper attitude adjustment recommendation that will help you succeed in social life! Otherwise I heard that there is a beautiful forest in Japan that you might want to visit - it has all the isolation that you would ever want.