I play one-suit Spider Solitaire. On my phone.
I can click on "Statistics" in the app and get things like percentage of games won, total games played, average number of moves per game, average time per game. I check this tab because I like to see that I am slowly improving my average time; I am a lot faster now than when I first learned the game.
You can reset your stats. I don't know when I last did a reset; it was back when I believed I was past the clueless newbie phase. I multiplied the total number of games played by the average time per game (which I do not recommend because it might be rather embarrassing) I get a Number, which being reduced to days, hours, and minutes, works out to, well, to a Chunk of Time.
I am not going to let myself feel ashamed of this Chunk of Time, for two reasons. Or perhaps rationalizations.
First, if it is recreation, how does it compare to other forms of recreation that I engage in, and that take up even more of my time? Like sleep, for instance. The older I get the more sleep feels like a waste of time. (Morning aches and stiffness, anyone?)
Second, I prefer to think of this chunk of time as therapy, mental exercise, "One quick trick for Seniors to improve brain function". After all, I consider walking, running, and working out enjoyable recreation, but my doctor and cardiologist encourage me to consider them medically necessary interventions.
So I will continue doing my mental exercise: Spider, Freecell, Crosswords. Maybe I can strengthen myself for the challenges approaching on the horizon -- like staying calm through The Holidays!