WTH - didn't I delete that Steam Civ 5?

[MeatUnit2]

Just finished a Revolutions mod game that took 199 hours. Domination in A.D. 2058. I'd turned off everything but domination, Space Race or total win options. Huge map, marathon. I didn't use Nukes (but my neighbors sure did). Toward the end the turns were really tedious. I had 102 cities.
But I won, so yay me. I'm like Winston Churchill. I can live with that score.

Then, without permission or any kind of warning, Steam downloaded a huge file updating my Civ 5 game (I thought I'd deleted the game - I sure tried to).
Did anybody else have this unexpected (and unwelcome) download?
If I choose to open a game they can and should download the game with all the updates, but WTH I got a huge download from them today for a game I don't even play. A game I thought I'd deleted.
What's up with Steam? I don't want this, it's intrusive.
++++
Sorry to put this on the Civ IV discussion board, but I play only Civ IV and from that point of view I want to know WTH is going on. Civ V players probably welcomed the download.

 

[elz17]

I personally despise Steam - its a great distribution platform but I find it to intrusive.

I usually set Steam to offline mode after downloading and installing a game. Mind you I don't play any games online through Steam so its easy for me to do this. This stops any of the nasty update downloads etc. that it can cause.

 

[Sian]

thats steam for you ... overly willingly to download stuff you have downloaded earlier and deleted

 

[Lemon Merchant]

Another tip: Make sure that Steam does not automatically load at boot up and run in your system tray.

If you're going to delete Civ 5, you need to delete the Steam client, too. Unless you have other Steam games.

 

[MeatUnit2]

Thanks for the advice. Steam is intrusive. I was very surprised that it downloaded update files for a game that wasn't being played/booted. I was under the (apparently mistaken) impression that once I'd removed the Civ V files from my hard drive that I'd have to download the game again if I ever wanted to play it again, and that it would, at that time, download with all the patches/updates.
I do have other games from Steam, including Civ IV, so I think I'm stuck with the client and stuck with Steam's BS.