People don't actually ask for advice. They've already made up their minds and just want someone else to confirm that their choice is a good one.
When I'm asked about the best TV to get, I almost always recommend a Plasma and then get told "no, LED is the best". Then they come over and see my living room's TV and go "Wow, that's an amazing picture! Is that the new Samsung LED?". When I tell them it's actually a mid-range plasma AND that I spent only half of what they did, I usually get these really blank stares, as if they know they got royally ripped off.
When I'm asked about a fast and reliable laptop because their old one was really slow and broke after only 2 years, I always recommend Thinkpads, Elitebooks, and Lattitudes. Then I'm told that it's pointless to spend that much money on a laptop, and they proceed to buy some cheap junk at Best Buy yet again.
If you want I've got tons of stories from when I worked as a PC technician. I swear, people always think they know more than you do, even when talking about your specialty.