In college in 2002 I needed to take a couple of electives to graduate. One I took was called "Sociology of Sports". One of the main themes of the class was spending one's entire youth to become a sports star was about the same longshot as winning the lotto. The sports were the major USA ones.
There were many aspects to it:
-The probability of getting onto a pro team, even if your skills are tremendous, is almost zero.
-If you do get on a pro team, the avg salary is 400k USD per year. This data might have been a few years old at the time (2002), but keep in mind, the millions and millions we see as salaries are the first round draft picks. The other guys are way lower.
-The average career length is 4 years. Due to injury. Due to being dropped in favor of the new class. Again, this was the avg. The first round draft pick guys that become the superstars obviously have avg careers closer to 10 years.
-The money management is nill. Most of these guys end up bankrupt. The start low or middle class, and then have a huge sum of money thrown at them. They blow it all on stupid stuff. Then 4 years later their knee goes out and they are cut. Now they have no income from sport, and they hadn't saved any.
I almost think pool is an easier path. It can be played much longer without injury or risk of being "cut". It's also a much lower level of money, so the player is always on a budget. Less likely to blow money on stupid stuff.
Although now that I wrote that, many GOOD players I've seen go straight to the poker machine and dump their pool score right into it.