Uninstallation Woes!

Bit of a rant really, that's all...Am I perhaps missing something here? If so, fair be it, but this is really starting to annoy me. I'm beginning to wonder why some applications even bother to include an uninstallation routine when, all it often does, is disable the program, whilst leaving behind 99% of the associated file structure.I’m sure it didn’t use to be this way, but whenever I uninstall a program these days, I always have to manually remove the files afterwards. I can perhaps understand small ‘applets’ working this way, but most seem to do this now. Even large complex and expensive addons do this.Why? I really am curious. Is there a point to it, or is it lazy programming?Although it was actually one of my most expensive FSX addons that prompted this, I don’t just refer to the FS market here. I’m talking modern software in general.