If only there was no grunting in Epica

The band would be so amazing. I like their songs, but I'm just really not fond of the grunting. I just don't like it, it sounds like they're trying to ruin their voice on purpose.
However it doesn't keep me from listening to their music. I'll just try to ignore the grunt parts~
Also, my dad said he liked Epica, but when I brought it up, he said he didn't like them at all. Like what the hell? Did your opinion just change in a few weeks or do you just want to have nothing in common with me?