I don't know why this comment got downvoted. I personally thing there is so much truth in it.
I practice Olympic lifting (total beginner) and I have to concentrate so much during exercises. Take for instance the snatch movement [1] which is my personal favorite and one of the hardest (in my opinion)
Also I find weightlifting very addictive: when you do the movement successfully is very rewarding. When you get it wrong you can't wait to try again next time