Sorry chief, I'm unable to fathom the logic underlying this comment.

Do you think that the day the first stem cell sausage hits the supermarket shelves pigs will be deleted from this reality?

You'll still be able to buy sausages made with real flesh in 50 years, just that between now and then alternatives will emerge that are tastier, healthier, and cheaper.

Steam trains still exist but you don't drive one to work every day because they're shit.