Because if I have handy access to it I’ll spend it on something else. Or when the time comes around to buy it I’ll talk myself out of spending it on the SD2 because either there’ll be a more pressing household expense or ill feel guilty spending that much on myself. I did the same when I got my SD1 last year. At least I know that the money I’ve put aside HAS to used for the Deck. And if I change my mind I can always use it to buy games.

I’m the same. I’m just going to put €10 into my steam wallet every week so there is something there to pay for the Steam Deck 2 when ever it’s announced. (At least a couple of years from now.)