Do I even need my steam deck?

So I have gaming PC connected to huge OLED TV next to my bed. I recently got myself a Steam Controller and I keep thinking whether I truly need steam deck.

I also have switch 2 so whenever I travel, I take it with me instead of my steam deck. Soon we will have steam machine and as I was considering to buy it I actually started thinking if I even need that and if I even need my current 1tb oled steam deck if I can just play in bed using steam controller on PC connected to the TV. I don't really travel with my steam deck as I don't like that whenever it's not connected to the internet, there's a desync between my hours played on PC and deck.

I'm a bit of a compulsive buyer so I bought it quite recently and now I realized if I even really need it. Help me out organizing this thought process.