I'll hit on all of your points, and then I won't perpetuate the argument anymore. People aren't wrong that we need to redirect this back to the topic on the forum, but I wasn't going to stand by while someone gets insulted. Not in my blood to do so.
P1. That one person was putting someone else down, and being a bully, and telling them they were annoying. You agreed he was wrong. You just coincidentally also have a similar opinion to him, so you find more justification in arguing his point. Even in the story with your friend, it sounds like you're frustrated because
your figures won't retain their value, and that's because you decide to open them. It's a catch 22 where you want your cake and eat it, too. (There's nothing wrong with feeling that way, but it's not your friends fault. He sounds like he was maybe being a bit annoying is all.)
P2. MIB doesn't even really matter that much in the Figuarts line. As long as you take care of the box and accessories, the figures pretty much hold their value. The new ways of packaging figures with Figuarts and Figma are kind of breaking down the MIB argument. And you're not considering people have different mindsets in the way they collect their figures, because it's them that has an understanding of why they aren't opening the figures they purchased, not you. I'm genuinely glad it's enjoyable for you to open the box, but you're not acknowledging anxiety as being a real reason someone wouldn't open the box. If they're feeling anxious about opening the box because they don't want to lose accessories, they might get as much pleasure leaving it in the box as you do taking it out, because it helps calm their anxiety. Other people have different mindsets.
P3. To put it into simple terms, "No" is
your obvious answer, not other peoples. If someone bought a sexy new sports car, they bought their own sexy sports car and can do with it as they please. They bought it, not you. That legally means they can just wreck it if they want. Maybe that brings them satisfaction. Whatever. it's theirs.
P4. Again, why does it matter to you?
P5. Chocolates are consumables, so that's kind of applicable here? Though I find the concept of there being thousands of people keeping chocolates in the box for them to basically rot funny. And you can "Not consider them DBZ fans" but your being bigoted against an entire group of people for no reason other than you think they're collecting wrong.
You wrote a lot of paragraphs.
P6. You should probably take an economics course, because this directly correlates with supply and demand. If we all left figures in the box, that means the only demand would be for figures that are in the box. Due to those not being rare, and virtually everyone in the market having MIB figures, the price would likely remain the same as originally released, or directly correlate with the age/limited edition of it, ect. If anything, there would likely grow to be a subculture surrounding this where barely a few people open the box and sell the out of box figure. If that happened, the
open box figures would be more valuable, as there would be far less of them on the market compared to the MIB. Regardless, DBZ would be fine in any case, as the love of figures doesn't dictate the series life. The forum would just be a forum directed at MIB collectors, which in your theory, would be everyone.
P7. Mint in Box collecting isn't bad, it's just different than the way you collect. You're right that there should be a harmony, though! We should all be understanding of different collectors.