enhance README.md with project motivation and improved screenshot reference

README.md

@@ -2,7 +2,20 @@
 
 A cross-platform Flutter application for viewing and analyzing binary files with multiple data interpretation modes and advanced scrolling capabilities.
 
-![Binary Viewer Screenshot](assets/screenshot.png)
+![Binary Viewer Screenshot](image.png)
+## Why This Exists
+
+I couldn't find any good binary viewers for macOS that looked as nice as the ones I was used to on Windows (like this [Binary Viewer](https://binary-viewer.en.softonic.com/)). The macOS options all seemed lacking in terms of modern UI and good user experience.
+
+Most existing options were either:
+- Command-line only (`xxd`, `hexdump`) - functional but not great for interactive analysis
+- Ancient GUI applications with outdated interfaces
+- Heavy-weight development tools that were overkill for simple binary viewing
+- Cross-platform Java applications that felt foreign on macOS
+
+I wanted something that felt native, looked modern, and provided the dual-pane analysis capabilities I was used to on Windows. Rather than compromise or constantly switch platforms for binary analysis work, I decided to build exactly what I wanted - a clean, fast, feature-rich binary viewer that works beautifully on macOS and can be easily shared across platforms.
+
+This project represents the binary viewer I wish existed when I started looking for one.
 
 ## Features