My biggest disappointment in this hobby is that I can never make my mind up, I sell fish and then regret selling them and start to lose interest in the hobby and then buy a new fish and the cycle continues. Hopefully I’ve finally found a tank that I really like and should keep for years.
I do agree with you on that one even though I have a CA cichlid tank I do think more people should branch out in the hobby, I’m setting up a uk native pond and I’m getting a cold water or brackish tank set up soon to so I can see the other parts of the hobbyMy two biggest disappointments aren't fish I keep but rather the current state of the hobby:
In aquariums people either keep only sa/ca fish or African species , and not much else these days.
In ponds I see only koi and goldfish and rarely any other fish despite easily compatible species