I knew the project in and out. I knew the requirements. I knew every line of code that got into it, every feature, every compromise. I put in half of the bugs myself. I knew we where we tied ourselves to a specific vendor, and how hard it'd be to separate.

When things became unbearable, I tried to do the rewrite. Took me 3 months to understand I'm not going to succeed. Why didn't I see this before?