I was invited to see the Chicago Preview of Delivery Man, the movie featuring Vince Vaughn. while I was in Chicago for a blogging conference recently. These are my impressions of the movie. I mean is anyone ever really ready for parenthood? This movie Delivery Man takes that notion and turns it into comedy with an infertility theme too. Vince Vaughn delivers the funny in every movie he does. Delivery Man is no exception. For obvious reasons, given the themes of adoption and infertility that I often tackle here on my blog Thrifty Mommas Tips, I was really curious to see where Delivery Man would go in terms of plot.…