[Kevin]

I think you need to not judge an entire national organization by its individual chapters.

National fraternities are a sum of their parts but their parts are each completely different!

If they're an 'animal house' on your campus they may be the best house on his. At any rate he at this time thinks it's the best house for him. Unless your opinion has something to do with the specific chapter he's joining (and even if it does) I believe you should keep it to yourself. He'll probably join anyway and then where will you be?