Somewhere out there is a d12 that is numbered from 1-4 three times, and was intended to replace that dreadful d4. It was part of a set (the d6 was a d12 numbered from 1-6 twice, the d3 was...you get the idea). I saw them at a convention several years ago and I haven't seen them since.
On the one hand, that is great! On the other hand, no one should besmirch the d12 (THE KING OF DICE) with d4 junk.
Do you think some other dice is better? Well, here are the probabilities that you are wrong.
1. Your momma didn't raise you right, and you never learned to respect the d12's authority.
2. You looked at a barbarian's hit points, and thought to yourself, "Self, I prefer weak and easy-to-kill, so Ima use an accessible d6."
3. You're one of those ... short sword fans. If you know what I mean. Not that I'm judging (I'm judging).
4. Just in time for the holidays, you want to ruin the 12 Days of Christmas by making it the 100 days of Christmas, which is just too much.
On the 83rd Day of Christmas, My True Love Gave To me, 83 Drummers Drumming ...
5. Every time you roll a d12, an angel gets its wings and a puppy finds a home.
6. You are a metric lover with your 5% increments. Captain Jean Luc Picard might not know how many lights there are, but there will always be TWELVE INCHES IN A FOOT!
7. You were confused by the movie
Twelve Monkeys, and thought, eh,
Eight is Enough. Or maybe d
Sixth Sense was more your speed, M. Night????
8. You have a d20 and never have to generate time; this is why your characters are late for everything.
9. All of your D&D games start at 12 sharp and end at d20 dull.
10. If twelve is good enough for a jury to sentence someone to die, it's good enough for a die.
11. Because the people, and the people are never wrong. Except when they disagree with me. Then they're like, super-wrong.
12. Well, the d12 is two more, isn't it? It's not ten. You see, most blokes, you know, will be rolling at ten. You're on ten here, all the way up, all the way up, all the way up, you're on ten on your rolls. Where can you go from there? Where?
How do I choose what die to roll? That's right. There is only one way. One. True. Way.
The d12, the very best there is. When you absolutely, positively got to kill every mother ... monster in the room. Accept no substitutes.