It's a good rational not just for term limits, but for limiting the amount of time any representative can spend in DC. Three months a year should be plenty of time to get a budget together. Most legislation is completely unnecessary--really, what's the use of passing a few thousand new laws per year, when we're not enforcing the laws already on the books? The rest of the time can be spent back at the district, around those whom the representative is elected to represent.
Well said.