You know you can put your DVD files on your own USB drive that cost maybe $5?
I don't use my DVD drive anymore, so I don't mind missing a drive on the MBP, if it makes my laptop lighter and faster.
Hm.. How does no DVD drive make your laptop faster?
USB flash drives are much faster than DVDs. SD cards too. If you have to reinstall, it is much more convenient.
And besides, I would definitely buy a MBP without DVD drive...
More space to put a better GPU, better CPU.
Less heat. Etc.