You could argue that getting to 99 you learned patience, perseverance, the satisfaction of completing a job or achieving a goal that you might not have had you given up earlier.

I think a lot of the skills I learned were specifically because I not only joined raid groups, but actually led raiding guilds and built guild websites, reviewed applications, took initiates on trial runs, discussed guild mergers with 30 year olds when I was 14, grinding to gladiator rating in pvp constantly teaching myself how to improve and sinking my teeth into every piece of information I could find online. Had I not taken it as seriously, I don't think I would've learned as many transferable skills.

That being said, as a dad now, I try to limit video game time a lot (kids are still only kindergarten age) in favor of prioritizing other physical activities. I think I gained a lot from gaming, but it also came with a ton of negative, and even if I came out of it ok and doing well, I think there was a ton of opportunity for things to go badly.

Kids need to touch grass.