This.

Also I drop gaming altogether at random points due to life, doesn't mean the current game is bad.

I mostly play two (or three) games simultaneously, like bit of each every day.
There are exceptions, like I used to play Pokemon games around 40 hours a week. And Civilizations and other strategy games I've played just that one thing for weeks, making it 100+ hours.

I typically stick with a single game at a time, and I might play a couple of hours a day on average. As for dropping games before finishing them, I have done so for weeks or months before eventually returning to it. Sometimes it's because I get sidetracked by other things and fell off the game because something else grabbed my attention. Sometimes it's because a game is just too long and overstays its welcome and I want to move on to something else. Even if the core gameplay is good, a game that just goes on and on and on with seemingly no end in sight will eventually make me tired of it.

As for how long it takes for a game to really grab me before I give up on it, given how drawn-out and protracted games have become over the past 20 years, maybe an hour or two. That seems to be how long it takes to get a good feel for the game. Past that, if it doesn't grab me I'm not going to slog it out for another 40-60 hours. For example, a friend of mine kept insisting I play Mass Effect. I gave it a try, but I simply could not get into it. The setting & story looked interesting, the art style was decent, but I simply could not get past the gameplay. The combat just felt too clunky and I wasn't deriving any enjoyment from it. It just didn't click with me. After a couple of hours, I tapped out. My friend kept insisting "It'll get better as you level up," but I'm not the kind of person who has the patience to deal with a game where "It gets good after the first 20 hours! Trust me, bro!"

Dont have one. Depends on the game. Could be 10 hours, could be 120 hours. It all depends.

Dont have one.

I play from start to finish regardless nowadays.

Depends on how much I’m liking the game. I’ve currently got over 30hr in MKWorld and I feel like I still have another month in me. TLoU:Pt2, on the other hand, lost me around the 25hr mark.

That can range from 5 minutes to 4 years.

I played Everquest daily for 4 years, GT Sport as well more recently. Close to 4,000 hours driving time on GT Sport, not including making liveries and buying/upgrading cars. Another 700 hours on GT7.

Currently I have been playing Hitman on VR for couple months now. I like sticking to one game, much easier to remember where I left off and continue.

But if a game doesn't click, I might try for an hour, but have also quit after a couple minutes. The longest I have pushed myself to try and get into a game is 10 hours, BG3. 

Whatever it needs to be.

I usually can't play more than a few hours (7-8 tops) of one game before getting back to another game. I'm often a game hopper.
Most games aren't interesting past the 25-30 hour mark, even good ones.