What benefits talking to hamas would bring? It only gives them and others the impression that terrorism pays. It means that EU has sold it's principles and it is suffering from serious moral failure. They will pay for it in the future, when islamists start targeting EU even more. There won't be any "good will gestures," in the end it is likely that there will be big conflict between western world and islamist world, if militant islamism doesn't die out before that. Unfortunately, internal politics and situations in arab countries doesn't look that good.
Seven Libyan soldiers killed in clashes with ISIS (Reuters)
from the article: Foreign Ministry protests EU contacts with Hamas officials