I love them.
although I too was a victim of ignorance back when I started.
the first fish I bought after getting a 90 gallon tank (which was monstrous compared to my 30s and 20s at the time) was a pacu..
I knew they got big, but 20 inches later, lol, it was too much.
I kept him for about 7 years though, but due to circumstances beyond my control, I had to move him to a 65 gallon, which, as you might imagine, did not work too well.
I found him a home in the 125 gallon at the LFS, and he apparently was sold for 25 dollars (cheap) to a family with a 180..
Hopefully, he is doing well, and still with us..
He was cool.