A programmer replaced almost all their desktop software tools with custom-built versions over a few weeks, using AI assistance and modern development tools. After 25 years of using vim, they created their own text editor "scribe" in just 3 days. They argue that building personalized software has become much more feasible than before, requiring only weekend-level effort rather than years of work. The author emphasizes they're not promoting their tools to others, but demonstrating that creating software tailored exactly to one person's workflow is now practically achievable and highly satisfying.