I've found a considerable difference comparing the smoking experience an MM corn cob versus a briar. I can see how some would favor one, hate one, or love both -- all for what, to each puffer, are very valid reasons.
That said, it doesn't mean one puffer is absolutely correct and another is all wet about cobs. It's very much a personal thing.
I think every pipe smoker should own at least one good, MM corn cob and give it a fair chance. They're All-American, really inexpensive and easy to find. If you honestly feel your Fernando Lamas complex being trashed smoking a cob (i.e., you don't "looook soooo maahh-Vah-lusss"), do it solo, like in your man cave.
I also recommend someone new to pipes get a few cobs as MM Corn Cob pipes are a cheap and easy way to quickly obtain a selection of pipes for one's rotation so they aren't relegated to smoking the same pipe or two everyday.