OldOldGamer: I don't understand this internet problem.
You have bandwidth to download 45GB games, but you don't have enough bandwidth to let steam client to check online you DRM.
The only argument I can understand are forced huge updates.
Aside this: not having "access" to your wife is no DAMN close to not be able to play a game.
If you have a really broken line, you still have to go trough the pain of downloading the game from GOG.
Clearly you do not have Internet or Steam Client issues. But thousands do. And why should one have to have that or the risk of it, as part of a bargain of buying a game?
You can pick and choose when, where and how to download games. You don't have that luxury with the Steam client.
Perhaps you share your web connection with someone or even a whole apartment building, and so you have a window only for downloading, then need to use it offline. There are many scenarios, some in the previous postings of others, that illustrate things exactly. With GOG games, once you have downloaded, there is no more need for the web, unless using multiplayer. Perhaps you share a PC, and need to play your games on another offline one. Why should one be limited with options?
Ok, a WIFE and a GAME don't compare, but the fact that there are similarities at all in the two situations, should be really concerning. What I said was to make one think, about what is similar and what isn't.
Sometimes updates, whether HUGE or not can be forced upon you, and you may prefer a prior version. As I don't work from GOG like many work from it or Steam, but rather keep my own backup of games on HDD, then updates need never bother me at all. When I do get an update, it never replaces the earlier versions, it is in addition to them.
At the end of the day it is about freedom of choice, and yours no doubt, is to use Steam in the manner you have said. My view, is to not encourage or give license to something like Steam. It sets a bad example or precedent for where things could get even worse.