Because if you don't grow up to become scientists we lawyers will have no-one to sue and/or take lots of money from for defending etc.
I get the same reaction when I see reports on the lines of 'a report from one of the big 4 accountancy firms says we need more entrepreneurs in this country'.
In other news a spokes-mosquito urges cows to continue having calves.
Yes, this is not a nice reaction, so sue me :-) (probably what I said is illegal under the Solicitor / Barrister / Accountant anti-defamation act of 1997).