have same feeling, but still have strong will to try and experience the latest OSs. The only change is that the times of trial reduced. Once found an OS is very smooth, will keep a long time on it.
Currently using OS 10.8 on MBP, Win8 Enterprise x64 on W520 and Win 7 Ultimate x86 on T420 for work. Both OS 10.8 and Win 8 have fantastic design and features, good and enjoy to use...