Funny thing about big tanks is that they are actually easier to take care of for beginners. In some ways smaller tanks are for experts who have a lot of free time on their hands, LOL.
Of course the main thing to worry about with big tanks are the big cost that come with them.
10 gal for sons turtle, 29 gal for some goldfish the wife brought home, got rid of them for firemouths. Then a 55 Mbuna, another 29 for fry, 75 for a planted loach tank, another 10 for snails and cherry shrimp, 125 for fronts and tangs(all under 3"), planning a DIY 1000+ in the basement... All in one year
Only thing is though the 1000+ may be a 2000+, deal with wife is it will be my last tank
my first tank was a 150gal. got it when i was 10 years old. since then i got a 160 but sold it. 100gal for my piranhas, 60gal for my lima, rtc, motoro(temp), 29gal for my lil bros oscar and my butti. sometime next year either a diy pond or diy tank will be in the works. my fish are gettin to big.
Fish bowl here too. I wond a gold fish at the carnival by throwing a ping pong ball in the bowl when I was eleven. It only held about two cups of water. Two days later my Mom bought me a 1 gallon bowl. That damn fish lived for almost 4 years in that bowl.
I bought a 20L from a friend with an Oscar in it in my early 20's. I soon bought him a 55 as he looked cramped in the 20. I ran that 55 for over 10 years and just purchased a 300 last month.