Impressionability can be a good thing. I wouldn't put that in the definitive, myself.
I avoid reviews and critical essays about movies/films prior to viewing. I generally like to know as little as possible. I like to take as few expectations into a viewing as possible. I can't possibly imagine why that would be seen as a bad thing. I sometimes enjoy reading critical reviews of a film or TV show after watching, but almost never before.
I think you've misunderstood me. What you're describing is still impressionability, in my view.
I'm referring to people who don't want to be exposed to other people's thoughts, period, even after experiencing something for the first time-- I'm not sure why both you and Pranzo assumed otherwise. If you're interested in other people's thoughts afterwards and you're eventually adding that consideration to your own (even if you're the arbiter of what influences you and what doesn't), that's still exactly the kind of impressionability that I'm referring to and that I think is essential. Sure, it might feel less and less useful after a certain point where you've already been exposed to quite a bit, but I think that you can only get to that point through lots of exposure to different views-- I doubt that anyone can just arrive at everything 100% on their own in a vaccuum and end up better off, and I doubt that that's how you guys developed your tastes as well, nor do I think that approach has any merit whatsoever. I've come across people who
actually have this mentality that their opinion is just 100% their own, that anything resembling reviews are something to scoff at, and they block out everything else as if it's some point of pride that speaks to their individuality or something, and I think that's just a bull-**** recipe for never broadening one's perspective and just being stuck in arrested development, personally. I tend to feel that our default opinions before letting ourselves be influenced by others aren't our true individual opinions at all-- they're the incomplete version of it, and impressionability is required to develop it to completion, in my opinion.
That said, I do kind of personally disagree/differ on your approach as well, but I just respectfully don't relate to it and find it confusing, I don't have some negative view or problem with it the way I did about what I was talking about. The way I see it, if you're willing to do it afterwards anyways, then the result will ultimately end up the same anyways-- you'd likely end up exactly as influenced. Maybe your approach speeds up the process or something? I don't know, I find the idea kind of pointless, myself. To me it's like trying to avoid letting something happen, and then seeking it out afterwards anyways with the intention of letting it happen.