Basically just tell everyone a feature/bug/anything from Minecraft, which in your opinion, makes minecraft "Minecraft" for you. Mine would be the way you "swim" By staying verticle and slowly bobbing around. :biggrin.gif:
If anyone ever answers that question, no matter what their answer is, they're right. Because it's different for everyone.
For me, it's feeling insignificant. The MC world will keep moving and expanding no matter what you do. If you don't carve a piece out for yourself in time, it'll mow right over you. Best to just make the most out of every little piece, since you never know which one will be your last.