I am/have a little bit of what everybody mentioned above.

I'm a bit more selective than I used to be w/ DVD, but not nearly as selective as I anticipated, so I already accumulated a BD collection in the upper-300's w/in just 2 years and change -- of course, quite a few of those titles are really only in my collection because of the kids. And no, I don't normally just run out and buy titles during release week either, so I probably avg something like ~$15 or so per title (other than the few TV series I own) after factoring whatever coupons, discounts, etc. (though I still have never made use of a $10 upgrade rebate yet due precisely to the collector's personae in me

).
Yeah, this is definitely a hobby and can get expensive very quickly depending on how one approaches it. However, the pragmatic personae in me also fights back and tries to keep things as reasonable as possible while the rationalizer in me tries to negotiate the whole conflict by downplaying the costs (vs other potential hobby costs) and upplaying the hobby sharing aspect -- at least it's a hobby that can be shared w/ my loved ones, some friends, etc.

And yeah, I'm back to renting some (in spurts) like I did during the early days of DVD -- before it became too easy to own every DVD at a serious bargain price.
And yeah, the format can be annoying just like everyone else said. And I've used a PS3 for most of the time so far, and even *THAT* really ain't as fast and easy for BD as a decent DVD player can be for DVD just for basic movie playback, etc. though not all DVD players are fast -- actually, most of the more recent DVD players I've tried can be pretty sluggish and/or user-unfriendly too. I guess that's "progress" for yah...

_Man_