I've been using Flash since Macromedia MX. Macromedia would load Flash up with some really helpful tools with each release, and when Adobe bought the program I couldn't wait to see how badass their version would be.
Man was I ever wrong. Flash has been frozen in time at Adobe. They put all their real updates into other programs like Photoshop and After Effects but leave the red headed step child Flash to rot in the basement. Every addition to Flash under Adobe has caused nothing but problems. Every other time I use it I end up having to recover corrupted FLA files, something I never had to do with Macromedia, and I have a powerful machine I usually use for film VFX.
If I didn't use Flash in conjunction with photoshop on my projects there's no way in hell I would be using any of Adobe's versions, but for now I'm stuck with it. I hope one way they wake up and update Flash before it completely dies off, but in the mean time- Fuck you Adobe.