As much as I do tend to buy games for one game... the switch is certainly not a one console game.
Smash, Xenoblade Series, Mario Kart 8, Metriod (both Prime & Dread), Bayonetta 3.
Honestly I look forward to days I get stuck in the train station or need to take a long trip for work because I have this wonderful little OLED device with me.
Case in point image of my last time I was stuck waiting for a train for 2.5 hours.
Can't do that with my PS5 or Series X, steamdeck maybe but the battery life on the switch is just great, don't need to worry about keeping it plugged in all the time.