HA...HAHAHA... HAHAAHAHAHAHAH.
I've met plenty of Sikh people that hate all Muslims and wish death upon them and their people. Sikh's are better, but they aren't saints like some would believe.
I shouldn't say this, but my personal opinion on Wiccans is that they're a bunch of dull knives. I don't see a problem with practicing magic, magic is everywhere, but as you stated, they are not following some ancient faith, its hardly even a religion for most Wiccans because so many are...
I'm not saying you're wrong, I personally believe having some form of life, even if it would be just a memory, would be more favorable. Yet if I don't exist, I won't be able to care.
I've done some research and everyone says that man will survive, I'm not opposed to your opinion, I'm open to it, I'm just sharing with others what some other people are saying/believing.