Person A: “I just (saw/heard/tried) a great new (movie/CD/restaurant). It was terrific, you really have to (see/hear/try) it yourself!”
Person B: “I (saw/heard/tried) that, too, and it stunk. You’re wrong.”
What on earth would compel Person B to respond like that? What does s/he hope to gain from peeing on Person A’s cornflakes?
Don’t be a turd. If you see someone else enjoying something that you didn’t enjoy, keep it to yourself and let the other person enjoy his/her cornflakes.