I’m the target market. With Steam I keep everything I ever played on my current PC installed forever, or until I run out of disk space and have to triage.

I don’t like to triage.

Example of a game that works nicely on the deck, and is giving me a great portable replay (other than the EA Launcher): Mass Effect Legendary Edition.

Size of that game: ~110GB

Also, personally, because of the slightly shonky WiFi download speeds and that I use it offline/whilst travelling a lot, I leave a bunch of games on there just in case I fancy them.

To me, more space would be good. I am unsure I'd need 2TB, but it would solve a lot. I've also got a few hundred gigs of other launchers (battle net) and ROMs on my SSD currently that are less easy to manage than Steam installs... again, the larger drive would just lighten the worry.

If you have slow internet and a few games that have 100+ GB you don't want to delete anything if possible. I bought myself a 8tb hdd last year to move games there if I don't play them and the ones I actively play stay on my 1tb nvme.

What am i installing?

Whatever the fuck I want. What kind of question is this?

My household had multiple people who use the Deck. I upgraded to a 1TB (plus the 512GB SDCard) which is enough for now but games ain't getting smaller in size

The Steam Deck can play more than steam games. I usually keep about 30-40 Steam games installed, but most are really light little games for casual play with just a couple of large AAA games at any given time.

But outside of Steam, the Deck can emulate up to PS3 and Switch games. And theres not really a good cloud-based solution without having to switch into Desktop mode. So I have my usually about a dozen PS2 games, one or two PS3 games, and my whole PS1 library on the Deck. Then every couple months I'll go into Desktop mode and delete what I've beat and copy over new games from my gaming PC.

I'm also not a dock user. Maybe I would be if I didn't have a gaming PC, but for me the point of using the Deck is to not be attached to anything. Otherwise an external HDD might help. I'm thinking about eventually building a NAS: I'm not sure if I could have games live there and still playable on the deck though?