The last 6 times I've flopped a set like this, I've ended up losing
Low kicker to a higher kicker
High kicker to a low spiked kicker
Full house to a better full house,
etc
So maybe that taints my opinion a bit, but here it goes,

With no raises pre-flop, any 2 is possible, and everyone should know that any 2 is possible. 2-3. 2-A, 2-K, 2-X (it was sooted!) In this situation, I think you've got a win-small-pot-lose-big-pot hand. I would have considered betting and not minding taking it down their, but with 3 people all saying, "I ain't afraid of no 2", I would choose the free option and just fold.