The "got sick from time to time" was my paraphrasing of the original statement "he stayed healthy most of the time".
He stayed healthy most of the time means he was healthy till the day he died? I don't know, words have meanings and there appears to be a significant disconnect between the two. But whatever, it's not important.
No one is complaining about what you did. Cruel is relative. Is it worse to keep a fish in a half gallon than a gallon? Yeah I suppose it is. But, the fact that you can find things worse doesn't make something else any better.
125 - BGK, chanchito cichlid, pictus cats, silver dollars, palmas bichir
125 - cichlids (severums, bolivian rams, chocolate), rainbows ( turquoise, red), loaches (angelicus, zebra, kuhli and horseface), plecos (BN, RL and clown), denison barbs, tiretrack eel, pearl gouramis, betta
90 - Congo tetras, african knife, upside down cats, spotted ctenopoma, kribensis, delhezzi bichir
2.5 - betta