I can't really think of many positive aspects of gambling. It is just great for leisure and passing of time. Also keeps your mind active as well. It may improve your maths, but that's about it.
It may improve your math but will never improve your earning opportunity because they are here to make money and they are operating with an edge.
We cannot beat them because of the house edge and I think the only benefits we can get is the entertainment it will give to us.
In sports gambling you have the chance to use your calculation where house edge may not be a problem for you. Because in sports betting we are not expecting any house edge. You can use your mind your calculation, your previous experience and gambling skill which can help you to make money from gambling.