I had a few big boys a couple of years back but got rid of 'em to make room for others. I am growing a few out now and use their babies as feeders.
The reality is, no one keeps these as "display" fish after a year or so. I actually like them, along with Neets. They know how to fight for their right to party.
I have a 40 gallon tank called San Quentin. It is full of Convicts.