I went to a home party this last Friday. At some point we decided to play Katan. The cards were in terrible condition from so many games that were played. I decided to continue sleeving my cards- i did it with TWoW few months ago and continued today with Marvel Zombies. I think it's good to give those cards 1 extra layer of protection.

If a Buddist played Arkham Horror: The Card Game, would he be a Shiva Sleever? :D

This didn't seem to be a discussion about to sleeve or not to sleeve at all since both people were for sleeving. The biggest and most obvious reason to not sleeve is because the world doesn't need more plastic, I think the second reason might be due to the added expense. Some games have so many cards to sleeve in them that by the time I've bought enough sleeves I could have just got another game. I would have liked to hear more reasons for why not to sleeve to make this a more interesting and genuine discussion rather than listening to two people agree with each other that they both sleeve their games.

I think sleeving is a waste of time. Like preserving the condition at the cost of ease of handling and seeing without glare, and spending money on them instead of another game, will preserve the value of their game. It won't make a difference on the value, as these games really don't hold value over decades. Open the game and play it.