So I made the right choice in choosing the 1Ds.
On the basis that this question is not entirely rhetorical, only you can answer that. For all I know, you could have had the option of investing the cost of the 1Ds in stocks, shares or bonds which might have doubled in value by the time that the successor to the 1Ds appears at a lower price.
How much money are you making from your photos? For successful professional photographers, purchases of digital cameras may be a 'true' investment. The increase in efficiency and quality pays for itself in a relatively short period of time. The enthusiastic amateur, like myself and possibly you
, are consumers of the goodies. The things we buy are luxuries rather than tools. We may harbour dreams of our images eventually making an impact, and we all know that dreams sometimes come true.
My own view is that life is to be enjoyed, but one should strive to do what is most meaningful rather than just most pleasurable. Combine the both by all means.