Because their is such a thing as being gifted or being hard working. Not all players are gifted, but they can still become good players by using their 'brain'.
Many people that shoot pool think they can become better without thinking about what they are doing at the time they are doing it ...
For every hour I have played Pool, I have probably put in 6-8 hours just thinking about Pool. Thinking about the game, about shots, about combinations, about english, about jump shots, about breaking, about the psychology involved with opponents, about sharking, about mental games opponents will run on you, about professional play, about big money matches. PLUS I watch 4 times more Pool than I ever play, and always have. There are times in my life I used to wake up at 3 in the morning thinking about a shot or from a Pool dream.
Knowledge in Pool is like anything else, it is a building block course that comes from intelligent study, observation, and experience....
I have been playing 43 years, and I was good after 1-2 years of play, but my overall knowledge and mental toughness was nowhere near what it is today.
It never surprises me when these 'kids' jump up and think they can beat me when they only have 1 way to beat me .... by not missing a ball .... when I have about a dozen ways I can defeat them ..... lol I can spot all of their weaknesses and exploit any one of them during the course of playing a match.
That is a very good reason to know your opponent and how good they shoot BEFORE you ever play them.
Many people do not have the right mental approach to the game ... defense is for sissies ... I am a ball maker (ball banger) .... If you ignore an aspect of the game, it will eventually come back to punish you because of it..... by losing, of course. Why should I learn to jump balls ... duh ... when an opponent makes 3 good jump shots and wins the match from you, then maybe you will find out ... but learn the right way from a qualified teacher ... How many players do you see try masse shots that don't know the first thing about them except to hit down on the side of the cue ball?
All really good players have put in countless hours watching, thinking, and studying the game. It is just like any other sport ... You have to approach with the right attitude, learn it the right way from a qualified instructor or by yourself if smart enough, and practice until it becomes somewhat natural for you. How many hours do you think Tiger Woods has just thought about Golf?
Or how many hours do you think CEO's think about business or comedians think about comedy.
People that want to become a serious good player put in the time, thought, and devotion, otherwise most people just like having fun shooting now and then .... and not everyone is capable of being a 10, just as everyone is not capable of being a Michael Jordon in basketball .... I know people that have shot Pool 20, 30 years that are just 5's, maybe a 6, and I know people that have shot 2 or 3 years that are 7's or 8's. I know people that have Masters, PHD's, or lawyers that are just a 5 level player, and people with GED's that are a 10-12 level (9 ball levels) in Pool. There are no hardfast rules ... That's one of the things about Pool I love, you meet people from all walks of life, many colorful characters, and can make some great friends ...
My brother plays Pool (he is 6 years older than me), was good when he was young and still is, but not as good as me (it's a little brother thing ...lol), won snooker championship at KU when going to school there, played big money matches ($1,000 sets and up), and I have done about the same, but he never taught me to play, I learned on my own .... He only gave me 1 piece of advice when he found out I was getting into Pool .... He said if you want to be good at it ... real good ... play for money ... and I did even if it was just for a $1 a game (which was a lot back when I was 14 and 15... early 60's).
You see, most people learn faster when they experience good or bad first hand .... more money is good, less money is bad ... and believe me when it is coming out of your pocket, you WILL learn faster than you would have otherwise .... lol
I hardly ever shoot Pool for free unless it is league play or a tournament. It is a money making venture for me and has been for years and years, and yes, I still enjoy it and have fun doing it ... but I have more fun when I win rather than when I lose ...