Two words: road salt. Suddenly I realized that my front derailleur was merely a chain guide. I was really unkind to my bicycles. Always trying to find a way

Two words: road salt. Suddenly I realized that my front derailleur was merely a chain guide. I was really unkind to my bicycles. Always trying to find a way to replace fewer parts. I've broken or worn out and replaced everything except the frame, seat post and handlebars on that bike.