I do genuinely mean it. You would only have to kill a small number to stop the rest coming, so it would be humane for them as well as for us. I want to keep my country and its people safe and secure, and sometimes you have to do unpleasant things to maintain that peace and security. Perhaps you might like to research how many British people have been killed, on our own soil, by illegal (and sometimes legal) immigrants. Try starting here:
Asylum seeker who killed Amy Houston, 12, in hit and run 'should be deported' | Daily Mail Online
We live in one of the safest, wealthiest and happiest countries that has ever existed, and we have fought many defensive wars to keep it that way; we are now in a similar, albeit undeclared, war. Boat migrants are invaders, full stop.