MeeGo is open-source.

The obsolescence argument makes no sense!

When MeeGo is eventually ready I would imagine it will be possible to port it to older devices too - 770, n800 & n810 as well as the n900.

One of the reasons I chose the n900 was because it's open-source and not a proprietory OS.

Ok there are close-source binary blobs in maemo - but that will eventually change.

BTW: Harmattan ~= MeeGo

I've had proprietory devices in the past and obsolescance or "legacy" support always frustrated me.

MeeGo is the way to go and actually gives us more choices, even older devices can benefit from this.

Imagaine the 770, 800, 810 and n900 running the same OS?
It could happen.

There is nothing wrong in being skeptical but I would rather choose a more positive state-of-mind.