How much does age matter?

I can't imagine a person in his 60's can think and play quick and and as long as someone in his 20's. like poker, i think. I think age matters a lot, IF there is time pressure (my feeling is 15 minutes or less). Of course if the older player has more experience, but we are talking about age. Almost all sports are played at a higher level by relatively younger people. People in their 50's are forgetting where they put their car keys, and teenagers can stop talking. lol. of course age matters. And there are exceptions. IF you think you might be a little old and want to get better, play much longer games. Talk to us when you are 50.....trust me, age is a thing.

hmmm... thinking about about car keys, race driver Gabriele Tarquini is 57 years old and he still competes at high level in wtcr.

@Chessplayer1523 Let's say there are 7 plus BILLION people on the planet....of course there is probably a 90-year old person who can flip on a high wire rope above a bottomless pit for 10 days while playing chess with his feet.....

we will search the internet until we find enough examples that makes us happy . i'm sure there are 10 million pages on flat Earth...

The conventional wisdom is that you will hit your plateau in seven years, and after that, stay about the same.
I'm 73. I started playing in my mid 30's. I improved slowly. My plateau is middling mediocre -- about what you are now. I know a lot more -- I keep learning -- but I cannot focus or concentrate intensely enough for strong competition.
By the way, Nezhmetdinov started playing at age 17, and thought it limited his ceiling.
Learn the endgames until they are solidly imprinted and can be played in your sleep. It frees your time, but more importantly, once you can recognize a winning endgame, you know when to liquidate.
Don't take advice from old mediocre players.

Have you searched the web using these words: "age of peak chess performance"

I peaked at a rating of 2171 in the Lichess chess puzzles (when I was 53 years old).

I seem to have lost my motivation in wanting to maintain or get a better rating.
There are days I feel minded to solve puzzles, other days I'm not.
I think, it's never to late to train. You have to enjoy it or be motivated to get better at something.
I don't need to be a perfectionist at chess to enjoy the game.
I don't need to play perfect moves to enjoy the game.
I just need to be motivated to play chess.

What's the reason to want to become a master of the game?

@Toscani Dude what? if someone could improve 100 rating a year every year chess would have been solved a long time ago.

@Tucktuck24 16 is a great age to start playing chess. are you seriously worried that you did not start earlier? you can still become a GM if you are smart. the question is: how much are you willing to work? if you really want to improve fast play slow games and watch Romans lab. Or you could choose to play 1+0 and sniff glue all day. Its all up to you

Reaching a peak is different compared to getting good from scratch.

I was peaking in March what my national rating concerns (DWZ 2188) after 30 years of playing chess. 20 years ago I had 2163 something...

I only started in September 2017.

2765 in training ain’t bad.