Well, as someone who has been training since age 5, let me explain something.
There is a huge difference between aesthetic muscles and functional muscles.
A lot of the biggest most ripped dudes out there aren't actually fit.
They can lift heavy things and then put them down but they're not actually fit.
They're slow, they have low mobility, low agility, they run out of breath after running half a mile.
A great looking torso with big pecs and well defined abs, that shit is completely useless, it just looks good.
If you want to be a proper athlete, you should focus on functionality, not looks, actually doing physical activities.
If you just want to be a bodybuilder, that's really easy, it just takes a lot of time and you won't actually be fit, you will just look good.