Sometimes, maybe. People's opinions have always at least some kind of value. It depends on the subject matter. If it's an opinion about myself, the way I have behaved or any opinions I have expressed, and they point out some things that I might have missed or misunderstood and if their opinion enables me to get better insight, then yes, I do value it immensely. But, I can't say that I value it above my own. It can lead me to reevaluate my opinion or it merely adds some aspects to my own but it rarely changes my opinion completely.
If it's something I completely disagree with then, naturally, I can analyze it to see whether I can use some things from it, but otherwise it's just something I disagree with. That doesn't mean that I don't value the opportunity.
Anyway, I guess I can say that with anything, things always go through my own internal filters and I don't decide anything or agree with anything just because somebody happened to express their opinion. Even if that person has high credibility, more experience, knowledge, etc. I like to make up my own mind.