On a happier note, I've spent quite a few hours yesterday identifying the cause and devising a solution for a long existing problem with the 737's autopilot (which became an outright usability killer in FSX). If I can pull the solution off without hitches, I might just ride the wave and finally finish that bloody manual which should make things easier for people to get into the TinMouse's systems.
After that, it's just cosmetic work and some wrap-up before you guys and the FS9ers will have yet another 737 to play with. But this one is for free.
So there is still some freeware development going on as exemplified by the paragraph above, but there remains one problem: Finding a target audience.
It seems that MSFS forums have adopted and cemented certain shticks, thanks to which you're very prone to simply just flicker up and then get blown out by all the shouting there is done about whatever new thing there is floating that forum's boat. If you don't believe me, just look at the subjects of the most popular threads or subjects in one of these.
It's hard to fit into one of these forums when your stuff will get litle attention because it's not simulated to the level of xyz, because it doesn't have pistons and props, because it isn't AI, because it isn't user-friendly to install and operate, because it isn't payware, because it isn't from a certain country, because it isn't for a certain flight sim version, because it doesn't incorporate innovative modeling, because etc...
It's off-putting, as a freeware dev's ego lives off nice words and tributes in whatever form. And these things are quite hard to come by nowadays without frequenting just about every forum everywhere to scrape up a bit of kudos and - more valuably: feedback - here and there. This makes PR rather time-consuming. And time is very valuable (and can be spent on other things).
Generally speaking though, I guess there's a point where making stuff for yourself to share with others just doesn't cut it anymore because your personally most needed models have been done and outside motivation to go on isn't just coming in anymore. One option would be going payware to avoid letting any acquired skills go to waste and using money for motivation and the other option is simply throwing the towel for now or longer.
In the latter case, however, I have one request to any developer thinking about abandoning their work:
Clean up your source files a bit and upload them somewhere. It would make things way, way, WAY easier for anyone else willing to complete or continue your legacy.
If you need an example at hand, consider Erick Cantu. Thanks to his public source files, MSFS got three basically new aircraft (737-200, DC-10, L-1011)!
Tl;dr: No one mentioned Tom Ruth.