Rationally, as a software guy, this seems somehow unfair. After all, even as it was launched and without any further changes, ST2 is a good product at a low price.
But the reality is that I feel the same way as radiac. When I chose to spend real money on a text editor -- not exactly a field where the free competition is lacking -- I did so because I wanted to support and encourage a project that did seem to have a lot of nice little touches and did seem to keep coming out with them. The obvious and abrupt end of the stream of incremental updates the moment ST2 went final does irritate me.
Unfortunately, contrary to the post I just read about how stable ST2 is, I have seen irritating crashes that stopped me using it for some work, and I haven't seen a bug fix even for that, nor any other improvement since I sent the money. I probably won't pay for ST3 at this point, because at least now I've figured out what does crash ST2 and how to avoid it, and fairly or otherwise, the assumption in the back of my mind is going to be that ST3 might make a few minor improvements of the kind we used to get anyway, but if it has any sort of crash or data loss bugs they won't get fixed.