that makes sense. ditching backwards compatibility does make life a lot easier - as long as you are aware of the compromise (or that it doesn't exist if you are targeting some enterprise environment perhaps) then it does make sense.

In general though I think as an approach it is customer unfriendly and programmer (or other ulterior motive) friendly /only if the programmer is lazy or starting from scratch/. Eventually you do have to decide a cutoff point based on the time you spend vs. the reward - however if you reuse your code properly these become one time costs that are rapidly amortised - and following the practice of backwards compatibility helps in a cross platform environment to ensure that your /architecture/ is actually future proof and platform agnostic.

As a one man band I enjoy supporting all of the platforms and with a large amount of backwards and forwards compatibility. It might be easier as a team of one, but it makes me feel (that bad kind of) pride when I look at 10+ man dev teams failing to do the same...