"For the IPs via TS"

There is a thread on SMO here:
http://www.surromomsonline.com/support/showthread.php?t=138646

I'm following it with interest.  I've considered adding my opinions but I'm not an experienced TS.  They would argue that my post-adoption feelings aren't relevant to the discussion.  And while I would agree that TS shows no similarities to an adoption from the closed "baby snatch" era, I think that the emotions are very likely to be similar to an open adoption. 

I wonder, if the emotions will be similar, why would I put myself through that again?  Why would anyone be a TS a second time?  I don't have an easy answer.