I think Tommyc is on the right track here.

How many of us have kids or grandkids that would dearly love a suggestion
as to what to get us for Christmas or Father's Day (although 2011.5 missed that one by a bit this year) or even a birthday for that matter?

And if you have a "significant other", they may be equally happy with getting you a BIAB upgrade as a gift. Mine is ecstatic when she doesn't have to shop for me, to try and "guess" at something I "might" like. So I go ahead with the upgrade and we're both happy.

As an aside, I only upgrade once a year at Christmas.
Nothing pressing for me that can't wait 6 months.

LLOYD S