My collection is super super small now. I started in 2003 with the Love Metal singles. At first I just wanted to have each and every song that the band released, even if it was just a simple radio edit, so I'd buy whichever versions necessary of whatever to accomplish that goal. I continued doing that for pretty much the rest of the band's existence, but somewhere along the line my buying just got out of hand and I felt like I had to own everything both past and present and released and unreleased. Fortunately, I was pretty sensible with the prices that I was willing to pay for things on eBay and whatnot, always finding it hard to justify spending more than what I thought an item should be worth, which is why there's a number of things that I would've liked to have owned but never did because I just couldn't ever pull the trigger when the opportunity was there.
I've since sold off the majority of my collection. The only things I have left now are what I don't want to get rid of or what no one else wants - which is most of it, honestly.
I have a near mint copy of 666 Ways To Love, a Your Sweet Six Six Six digipak without the sticker, a Razorblade Romance cardboard promo, an original Razorblade Romance vinyl, a HER version of Razorblade Romance, a bunch of pre-Dark Light digipak and jewel case singles, a copy of Two Decades Of Love Metal on vinyl, and all of the different colored Tears On Tape vinyl. I'm sure I'm missing some stuff, and that doesn't include items that I had when I was younger and didn't take care of and/or lost. There's plenty of those, sadly.