Myth: code can be ugly as long as it works, don't spend company time on making it look good or on minor optimizations.

The truth is that you can tell when effort has been put into a job. Even if it just works, the lack of discipline means that in the end it will be difficult to maintain and probably will fail in unexpected situations.

Every language has its conventions, but if I spot more than a line of separation between blocks of code, that is a common telltale sign of noob. Run from that shit.