Granted, High Definition does look nice, with sharper images and a supposed better sound quality, the jump between SD and HD is mega. But the fact still remains; It doesn't justify the cost of upgrading all of my equipment to get something which I probably won't benefit from.
For example, my parents got as part of a TV / VCR package a Toshiba for Â£1400 in the early nineties. Considering that it still kicks the crud out of most modern standard definition TVs even to this day is proof of how good it was.
But I digress. I don't think HD is quite the leap from VHS to DVD - One is a very poor low resolution format, the other is a format without all these problems and clearly superior in every way (We forget that the VHS has been around since the mid 70s, DVDs have only been, realistically speaking, out for over a decade).
DVD was the prime format because it still works with TV sets you can get in the early 80s.
HD is an expensive manouver. I have no intentions of staying with SD forever of course, so once HD becomes dirt cheap like the DVD has, I'll move swiftly on.