Oh, I completely agree! A neighbor of mine ran as a last-minute write-in (officially) and won...

... except the election judges had forgotten to look for any write ins, and tallied him up with zero votes. He knew he'd voted for himself at least! Big mess, and the reason why I got involved in election judging.

But, when the write-ins are not registered, they still need to be analyzed and compared to the list, one-by-one, manually, at the end of of an already long day. The only people who see silly write-ins are the poll workers, and they're not at all amused.