As much as I dislike Whedon, the show is not bad (though Season 4 and 6 are very very weak seasons, and 7 fixes them).

Though Buffy was a small woman, the show multiple times shows that she is superpowered with enhanced strength (she sometimes accidentally breaks stuff), durability, and healing. So she is not just a standard issue 80lb woman whooping up on 200lb men ala Black Widow.

It is also filled with lot of 90s/early 00's pop culture references, so it is a trip down memory lane.