As 2AM wakeups go, a dog waking you up to go piss is fairly benign. Not as bad as a Charley Horse, but not as much fun as a surprise blowjob from a good-looking woman. Or even a homely one.
Get up, let her out into the back yard for the time required, then back in the house for a treat. While she eats the treat, use the time to drink a glass of water and empty your own bladder. Then back to bed.
But now it's the wee small hours of the morning and you're lying in bed all alone, and those thoughts start creeping in out of their hidey holes.
You start thinking about how you've been a loser all your life.
Even as far back as kindergarten, you were a loner. Did you prefer being alone or did you just get used to no one wanting to be around you? I mean...even your cousins, who kind of have to accept you, kind of didn't show much enthusiasm about the prospect of hanging out with you.
Puberty was rough. Since you had no friends, you had no one to set you up with their sister or cousin or whatever. As a loner, you certainly had no game. So there you are with your raging hormones, but girls shunned you because you're fat with a face like a gooey pizza.
And it didn't get much better once you got older.
And now you're old.