SSD's are nice, if you have the cash. They'll probably be standard equipment 10 years from now.
Definitely. SSDs going mainstream is pretty much the death toll for hard disk drives.
Most people do not need them, though. It is one thing to want the speed, and quite another to really need the speed.
That is very true. For most of the tasks the average user does, it doesn't really matter how fast the system is (provided you have enough RAM, of course). A RAID 0 array of 3 SSD drives does not make my web browsing experience any faster, for instance. Doesn't make me code any faster either, hehe, although at times I wish it did. 