That’s not the answer either. You’ll not get the most able or most willing politicians but only the cleanest or anodyne candidates who may not be the ablest candidates. It’s a terrible filter.
This argument is strong in theory, but not so much in practice.
This is like arguing for monarchy because democracy is a huge amount of time/effort and is imperfect anyway so why not save time. I've heard many bad arguments for monarchism as it happens, but none are quite so bad as "Why bother even trying to have good government?"
I believe that shows the popularity and image contest of democratic politics.