That's why I said get psychiatric help! I'm serious! Its not just fish, people do this with all kinds of animals, its called hoarding, you may not have a "hoard" right now but it sounds like your on the way.
Unless of course you can properly house them all for life, if your like Oddball and can manage an insane amount of tanks, go for it. Make sure you know you its the fish and not just the feeling of obtaining a new animal that's making you have so many tanks.
I do have some personal exp, a friends mom was that cat lady. She would be so excited when getting a new cat, even though she had like 15-20. In a 3 bedroom ranch. It was sad really, I know that's a bit more extreme then buying new fish a lot but the same situation in a few fish tanks would be just as disturbing to other hobbyists. Maybe not the average person but I know when I see like 20-30 fish crammed in a tank and you can barely see water it makes me mad
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