Is there some rule against ending a sentence with the contraction “it’s”?
Earlier today while writing a very informal email, I expressed:
If you don't do it, I will.
Upon looking at it, I realized that "I will" could be contracted to "I'll", however, this is completely unheard of and feels quite awkward. I am now quite curious, is there a reason why ending a sentence with "I'll" feels (or is) so inappropriate?
I understand that the use of contractions is generally an informal use of language so rules of usage can be a bit loose. Therefore, this is a case that to me doesn't make logical sense and I'm a bit confused. Why does it feel wrong when an "I'll" is placed at at that end of a sentence, even though such an expression is informal and not, technically, an incorrect usage of the contraction "I'll?"