And if you can undertake a massive suspension of disbelief you might just give it a viewing. If you do watch it, don't get hung up on the demons. To my mind they are not the challenging things about the show. A cosmology is invented to make sense of needs and feelings. The other acute problem is the depiction of good and evil.
Evil is out there - an entity beyond, while humanity is seen as 'the good'.
In all our frailty, passions and occasional failure, in Buffy's world we are the good. Also in Buffy, evil is nearly always ugly, and is seldom subtle. But as a friend said, evil in her experience is shining and beautiful. She is tempted by things that are alluring. Thanks to Anne Cameron and the young people of Austinmer Anglican Church.