I'm always curious. Go on then. It's always interesting to find out why people's things that you think are 'strange. They usually have their reasons.
As promised, here is my reasoning - part of it has been posted in other threads...
The way I saw this jailbreak season was that I wanted to pick an iOS version, jailbreak, and keep it forever until I replace this phone - that's how I normally operate. There were 3 options because I started on ios 6.1.4
6.1.4
Pros: This is a final software release for iOS 6. It is very smooth, not buggy and generally much snappier than iOS 7.0.4. All the jailbreak tweaks work for it. I know how to make themes on it. Basically it is tried and true.
Cons: Waiting for ih8sn0w to release the untethered jailbreak. Eventually iOS 6 will stop being supported. Much sooner than iOS 7 will.
7.0.4
Pros: iOS 7 so it will be supported and used to optimize apps and tweaks for much longer than iOS 6.1.4 counterpart.
Cons: Seems to be buggy and slow. I don't really like the visual appearance of the icons. Might drain battery a little faster than 6.1.4. Will have to wait for mobile substrate and have to learn theming all over again.
7.1b2:
Pros: Much less buggy than 7.0.4. The general consensus also seems to be that it is much faster than 7.0.4. iOS 7 so it will be supported and used to optimize apps and tweaks for much longer than iOS 6.1.4 counterpart.
Cons: It is a beta software - so it is by no means perfect. Will have to wait for mobile substrate and have to learn theming all over again. The biggest con I had with 7.1b2 was the expiration date - but that appears to be resolved.
This is basically the list of pros and cons that went through my head. The question for me was always 6.1.4 or 7.1b2. I never wanted 7.0.4 because it seemed like a beta release of 7.1b2 from what I observed everywhere. And once the expiration date was resolved, that sealed the deal on 7.1b2 for me.