I have to say I do sympathise with the OP. I'm not a 'fan' of either platform, I just use what I have to for what I need.
I'm going to buy a Macbook Pro for work, and I'm really going to miss Bluray.
If I had a choice, I'd be replacing my existing Vaio with the newer version of mine (the FW series) which has a 16.4in 1920 x 1080 screen (true 16:9) and a Bluray drive (as I have now) pretty much the same spec as a MBP, but for around 400 euros less!
I have to say it is great to grab a Bluray from my home collection when I'm going away, and more than that, to be able to copy my entire collection of photos onto a single disc rather than having to figure out how to split it up every time onto 5 or 6 DVD's (yes, I backup on to an external HDD as well, but a copy on optical disc is an extra precaution that I can send off-site easily)
I really can't understand why Apple ignores Bluray, playback would look fabulous on their superb sharp displays, such a pity.
I've had a look at iTunes, and even bought the odd episode of a TV show that I've missed, but I always find that things in iTunes cost more than going and buying the physical media - for example House S4 on iTunes £30.24, play.com £14.99 - WHY?! I don't see myself getting twice the usefulness out of a download than physical media - which I can lend, share and even sell! (ever tried selling a download of a series that was crap?! - oh, you can't, you're screwed!) I've got 18Mbps ADSL and it still takes ages to download even one episode from iTunes.
Anyone that says optical media is dead is talking bollocks! We're still going to have optical media for at least 10 years, probably more until chip memory gets seriously cheap and broadband increases its bandwith universally to 100+ Mbps to accomodate full-HD downloading.