The fact that debug cycles are fast. I started out working in nanotechnology, and spending 3-4 days of fabrication -> electron microscope -> optical verification was soul crushing cause 99.9% of the work never led to anything and you practically never knew why.

Software development is logical and predictable. It's (relatively) easy to break a large task down into small ones, prove to yourself that they will work, and compose them together to complete a large project. Sure, things go wrong here and there, but for the most part, you can be confident that whatever you're doing should work every step of the way... without having to worry that you committed some irrecoverable error at any step in the process.