If it's something you're not sure about and they may have experience to offer advice, yep you are good to ask them and you should.
Same as with a partner, if you aren't open about what YOU want and ask what THEY want, you may never actually realize they like some things that aren't expected, and your ideas may spur something in them they had not considered. It's a win-win.
So not sure if you're just being an ass with the response, or are an arrogant type (which is how your response comes across strongly btw) but there is zero wrong with asking for opinions and having an open dialogue. Only an idiot would never look for outside information and only rely on what they have experienced themselves.