Don't be so soppy. Of course they'll be worth more than that. As it is, my kids stand to inherit all £375k plus 60% of anything on top. That's quite a lot of money to receive for doing fck all.
Let me see, would I prefer that my hard earned cash, all of which I have already paid tax on, went to my kids for doing fck all or the government ( who have already had their share ) for also doing fck all ? Yep, my kids win handsdown every time. Besides, your support of this tax seems to be completely based on your hatred of the rich and the Royal Family. Normal hard working families are currently caught by this immoral tax. If it kicked in at say £2m I might support your argument but it doesn't, it kicks in at the cost of a very modest family home. I for one will be doing everything I can to lower my IHT liabilities so the government get as little as possible.