I remember using clients like pidgin with all my accounts it was a great experience. Now I need to have like 100 apps

BS

The only thing "killed" XMPP was that proprietary made money, XMPP didn't.

Apart from that, it's alive and well. See Conversations for android, Prosody for server.

What are you talking about ?? You need to confirm each other before communicating on XMPP, spam can't get through that !