Unlike the president, who has offered no explanations for his ringless state, palace aides offered an explanation as to why Kate Middleton's husband has opted to go without. "He's [Prince William is] not one for jewelry,' explained a Palace aide. 'He's never worn any. He decided he didn't want to wear one now. It's all down to personal preference" (via Marie Claire). Though Trump hasn't really addressed his lack of a wedding ring, we're guessing his reason for avoiding one comes down to personal preference, too.