When I was 19, I started out with a one gallon tank with one black skirt tetra........within a week I had a 10 gallon and within less than 2 months had 2 30 gallon tanks, 1 25 gallon tanks, 1 18 gallon (tall) tank, 2 ten gallon tanks, and several bettas in various small tanks.
Yeah, I was addicted from the start and 12 years later, I still am!