I have a friend who loves food but is a dreadful cook, she has a Thermomix and loves it, she uses it almost every day.
When she had a two week holiday last year, I borrowed it to find out whether I'd like one.
Yes, it's impressive, but it didn't tempt me at all, it certainly didn't do anything that a good human cook can't do!
It's not something that I'd consider buying, it's not the expense, I'm the idiot who pays £299 for a Dyson hairdryer (worth every penny too)! Pound for pound the Thermomix is probably better value, due to the number of things it does, as opposed to just drying hair, but I don't want one!