Do you double sleeve your decks? Why / why not?
I don’t have that much first hand experience but here’s a quick literary review of random internet posts:
Pros
- Cards are protected from liquids
- Keeps foils planar
- Top part of the card is protected from dirt
- Is this really such a problem?
- Some people like the shuffle feel
- Cards remain single sleeved when you remove the outer sleeves and put them into a binder
Cons
- More costly
- Thicker decks, especially in 100 card formats
- Deck boxes become tight, trouble fitting tokens etc.
- Shuffling may become more cumbersome


I do only for cards I know that hold a lot of value, and I might want to sell in the future. Cards above 10 euro’s in general. For 5 cent fillers I dont like the extra hassle, and extra plastic usage. I dont feel like I can feel the difference between them when shuffling or looking at my deck, but for me expensive cards are an exception, so max 5 high worth cards per deck.
Note that this may be frowned upon or considered cheating in competitive settings like tournaments, since it would make some cards in your deck thicker than others. I took the same approach but double sleeving the whole deck when I used to play tournaments
I only play edh with friends, so it wont be an issue, but good call ;)