I agree with you that it's best always to shoot at the best possible resolution and quality, but why on earth mess about with dozens (hundreds?) of DVDs when you can have an external drive plugged in to your computer or kept in your pocket?
Take photo, burn to DVD, reference, store. Need photo, find DVD ref, find DVD, put it in the drive, find picture, take DVD out, repeat for the next picture on a different DVD. Seems illogical and time consuming. I too need to access high-res photos daily. It would drive me nuts having 600GB (my commercial library) of images stored on 50 or so DVDs. I have mine on 4 hard drives: my main PC's hard drive, another back-up hard drive permanently plugged in to the PC, a further back-up drive in a safe place at home and one kept off site that's backed-up monthly. However, if DVDs suit you, that's great. I was just surprised to hear someone still recommending DVDs as a storage medium, especially as their capacity is so small.