What's your take on this "old" storage technology compared to the "newer" storage technology of internal flash storage or removable flash cards or even SSDs?
I liked MiniDV tapes for 2 reasons:
1. Your tape is your (raw) archive
2. You get to preview the footage while importing in realtime (VERY useful for editing purposes - you screen it during import and get an idea of what you have)
OTOH, I HATE tapes because of the realtime import. That drove me absolutely bananas! On the flip side, digital files meant instant gratification

Although with Flash/HDD storage, sometimes you have to transcode before using the footage. I'm especially glad that a lot of modern editors offer real-time editing of footage without transcoding, or the ability to edit via proxies.
Fortunately, RAID boxes are getting cheap, NAS is inexpensive (FreeNAS etc.), 3TB hard drives are $130, 2TB hard drives are below $80 - so digital archiving is getting pretty cheap to do these days.