Okay, you don't have to say why. just a regular goth band will cut it. But here are mine:

Joy Division
Sisters of Mercy
Cruxshadows
Einsturzende Neubauten
Wolfsheim
Bauhaus
Sisters of Mercy

The Cure's Gothic Trilogy – Seventeen Seconds, Faith, Pornography
Joy Division – Unknown Pleasures, Closer
Bauhaus – In The Flat Field, Mask
Echo and The Bunnymen – Crocodiles, Heaven Up Here

I choose the Cure as my favorite mainly because of Seventeen Seconds. This is one of my favorite albums. I love the minimalism and Robert Smith's guitar parts. I also like the sad tone of the album.