My main concern with WP7 is that it can run only managed code (see http://social.msdn.microsoft.com/Forums/en-US/windowsphone7series/thread/096b66ee-23c1-47b7-a

My main concern with WP7 is that it can run only managed code (see http://social.msdn.microsoft.com/Forums/en-US/windowsphone7series/thread/096b66ee-23c1-47b7-a768-bc2ae9e94c7c http://social.msdn.microsoft.com/Forums/en-US/windowsphone7s... for example). This means that existing non-.NET code has to be rewritten from scratch to be ported to WP7, while on iPhone and Android it is possible to link native code. If a developer wants to write the same application on iPhone or Android and WP7, basically no code can be shared. Is it worth it?