I must share an anecdote. A recent project was assigned to me which was outsourced to a consulting company, they ditched the project after 80% completion. I was

I must share an anecdote. A recent project was assigned to me which was outsourced to a consulting company, they ditched the project after 80% completion. I was required to do the rest. I went through the code and it was horrible. They had no concept of DRY principle - little code pieces were copy-pasted everywhere. There was no naming convention, variables were randomly names, in some places they made use of ORM, other places had raw SQL queries used with mysql_query() calls. It was a gigantic mess. If the code would've been organised properly, the rest 20% would've taken me 10 days, now I'm not sure how long it's going to take. Even though the code works and whatever they did is functional, but its light years away from maintainable. "Mine works" isn't always a good solution.