Another weird question from me

If you had the opportunity to trade your entire card collection for that 1 special card, would you do it? Now I don't mean your stockpile of 1987 Topps Bobby Thigpen rookies for a T206 Wagner! What I am getting at is a fair value trade, if your collection books at 10K or 50K or a million dollars and the other card also is valued as such, would you do it? Now the pretext is the single card is your "holy grail" and for argument sake, this would be the only chance for you to EVER own said card. Would anyone or everyone be comfortable owning 1 single, special card as their "collection" or is it the whole that does it for you? If you answer yes you would, what would that card be? My only hope for this post is to see what the different mindsets there are out there.
Thanks!