I agree that Open source is really the only viable option for a hobby platform. However, AROS* simply isn't ready yet and there is a lot of software missing (And I'm not talking OpenOffice/FireFox here). Things are most certainly improving, but there is still some way to go.
Having said all that there is a possibility that there might be an interesting AROS-related development later on in the year.
*Otherwise known as AROSROSROSROSROSROSROS... ;-)