Destiny 2. I have no idea what's going on but I sure do love shooting those aliens.

what's your "I will keep playing this game for the rest of my life" fallback?

Lately it's OpenRCT, Counterstrike 2, or Cities Skylines. On the phone it's minecraft.

Hardspace: Shipbreaker. If I’m wanting to play a game but don’t have anything specific it usually means I just want a mental break from life. Shipbreaker is perfect for that. It’s fun and engaging but you play at your own pace and no one is shooting at you. Plus you’re floating around in space with 6 degrees of movement (not considering 360 degrees of rotation) tearing apart spaceships!

we could always use more valiant Helldivers to protect our way of life. for freedom and democracy.

There's good free multiplayer games (e.g. delat force, marvel rivals, deadlock)

Unless you mean single-player

I've been chipping away at that deep rock galactic reverse bullet hell game for a while now. Don't have the patience to play anything for more than half an hour these days.

FIFA, a lot of the time. Lately it's been Rocket League.

It's going to get some hate but..

Brawlhalla

Another playthrough of BG3.

Dino Run

Shmups. Not any one in particular, although ESP Ra.De. or DDP DaiOuJou often tend to be top of my list.
Otherwise, Streets of Rage 2 or TMNT: Turtles in Time.

Wz2100 and zero-k. Let's blow stuff up.

TV

Ys Seven for the PSP. I have Ys VII and Ys: MoC for the Vita and Ys IX for the Switch, but there's something about Seven that keeps me coming back.